| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| package org.apache.tools.ant; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.Hashtable; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import org.apache.tools.ant.types.EnumeratedAttribute; |
| import org.apache.tools.ant.taskdefs.PreSetDef; |
| import org.apache.tools.ant.util.StringUtils; |
| |
| /** |
| * Helper class that collects the methods a task or nested element |
| * holds to set attributes, create nested elements or hold PCDATA |
| * elements. |
| * |
| * It contains hashtables containing classes that use introspection |
| * to handle all the invocation of the project-component specific methods. |
| * |
| * This class is somewhat complex, as it implements the O/X mapping between |
| * Ant XML and Java class instances. This is not the best place for someone new |
| * to Ant to start contributing to the codebase, as a change here can break the |
| * entire system in interesting ways. Always run a full test of Ant before checking |
| * in/submitting changes to this file. |
| * |
| * The class is final and has a private constructor. |
| * To get an instance for a specific (class,project) combination, use {@link #getHelper(Project,Class)}. |
| * This may return an existing version, or a new one |
| * ...do not make any assumptions about its uniqueness, or its validity after the Project |
| * instance has finished its build. |
| * |
| */ |
| public final class IntrospectionHelper { |
| |
| /** |
| * Helper instances we've already created (Class.getName() to IntrospectionHelper). |
| */ |
| private static final Map HELPERS = new Hashtable(); |
| |
| /** |
| * Map from primitive types to wrapper classes for use in |
| * createAttributeSetter (Class to Class). Note that char |
| * and boolean are in here even though they get special treatment |
| * - this way we only need to test for the wrapper class. |
| */ |
| private static final Map PRIMITIVE_TYPE_MAP = new HashMap(8); |
| |
| // Set up PRIMITIVE_TYPE_MAP |
| static { |
| Class[] primitives = {Boolean.TYPE, Byte.TYPE, Character.TYPE, Short.TYPE, |
| Integer.TYPE, Long.TYPE, Float.TYPE, Double.TYPE}; |
| Class[] wrappers = {Boolean.class, Byte.class, Character.class, Short.class, |
| Integer.class, Long.class, Float.class, Double.class}; |
| for (int i = 0; i < primitives.length; i++) { |
| PRIMITIVE_TYPE_MAP.put (primitives[i], wrappers[i]); |
| } |
| } |
| |
| private static final int MAX_REPORT_NESTED_TEXT = 20; |
| private static final String ELLIPSIS = "..."; |
| |
| /** |
| * Map from attribute names to attribute types |
| * (String to Class). |
| */ |
| private Hashtable attributeTypes = new Hashtable(); |
| |
| /** |
| * Map from attribute names to attribute setter methods |
| * (String to AttributeSetter). |
| */ |
| private Hashtable attributeSetters = new Hashtable(); |
| |
| /** |
| * Map from attribute names to nested types |
| * (String to Class). |
| */ |
| private Hashtable nestedTypes = new Hashtable(); |
| |
| /** |
| * Map from attribute names to methods to create nested types |
| * (String to NestedCreator). |
| */ |
| private Hashtable nestedCreators = new Hashtable(); |
| |
| /** |
| * Vector of methods matching add[Configured](Class) pattern. |
| */ |
| private List addTypeMethods = new ArrayList(); |
| |
| /** |
| * The method to invoke to add PCDATA. |
| */ |
| private Method addText = null; |
| |
| /** |
| * The class introspected by this instance. |
| */ |
| private Class bean; |
| |
| /** |
| * Sole constructor, which is private to ensure that all |
| * IntrospectionHelpers are created via {@link #getHelper(Class) getHelper}. |
| * Introspects the given class for bean-like methods. |
| * Each method is examined in turn, and the following rules are applied: |
| * <p> |
| * <ul> |
| * <li>If the method is <code>Task.setLocation(Location)</code>, |
| * <code>Task.setTaskType(String)</code> |
| * or <code>TaskContainer.addTask(Task)</code>, it is ignored. These |
| * methods are handled differently elsewhere. |
| * <li><code>void addText(String)</code> is recognised as the method for |
| * adding PCDATA to a bean. |
| * <li><code>void setFoo(Bar)</code> is recognised as a method for |
| * setting the value of attribute <code>foo</code>, so long as |
| * <code>Bar</code> is non-void and is not an array type. Non-String |
| * parameter types always overload String parameter types, but that is |
| * the only guarantee made in terms of priority. |
| * <li><code>Foo createBar()</code> is recognised as a method for |
| * creating a nested element called <code>bar</code> of type |
| * <code>Foo</code>, so long as <code>Foo</code> is not a primitive or |
| * array type. |
| * <li><code>void addConfiguredFoo(Bar)</code> is recognised as a |
| * method for storing a pre-configured element called |
| * <code>foo</code> and of type <code>Bar</code>, so long as |
| * <code>Bar</code> is not an array, primitive or String type. |
| * <code>Bar</code> must have an accessible constructor taking no |
| * arguments. |
| * <li><code>void addFoo(Bar)</code> is recognised as a method for storing |
| * an element called <code>foo</code> and of type <code>Bar</code>, so |
| * long as <code>Bar</code> is not an array, primitive or String type. |
| * <code>Bar</code> must have an accessible constructor taking no |
| * arguments. This is distinct from the 'addConfigured' idiom in that |
| * the nested element is added to the parent immediately after it is |
| * constructed; in practice this means that <code>addFoo(Bar)</code> should |
| * do little or nothing with its argument besides storing it for later use. |
| * </ul> |
| * Note that only one method is retained to create/set/addConfigured/add |
| * any element or attribute. |
| * |
| * @param bean The bean type to introspect. |
| * Must not be <code>null</code>. |
| * |
| * @see #getHelper(Class) |
| */ |
| private IntrospectionHelper(final Class bean) { |
| this.bean = bean; |
| Method[] methods = bean.getMethods(); |
| for (int i = 0; i < methods.length; i++) { |
| final Method m = methods[i]; |
| final String name = m.getName(); |
| Class returnType = m.getReturnType(); |
| Class[] args = m.getParameterTypes(); |
| |
| // check of add[Configured](Class) pattern |
| if (args.length == 1 && java.lang.Void.TYPE.equals(returnType) |
| && ("add".equals(name) || "addConfigured".equals(name))) { |
| insertAddTypeMethod(m); |
| continue; |
| } |
| // not really user settable properties on tasks/project components |
| if (org.apache.tools.ant.ProjectComponent.class.isAssignableFrom(bean) |
| && args.length == 1 && isHiddenSetMethod(name, args[0])) { |
| continue; |
| } |
| // hide addTask for TaskContainers |
| if (isContainer() && args.length == 1 && "addTask".equals(name) |
| && org.apache.tools.ant.Task.class.equals(args[0])) { |
| continue; |
| } |
| if ("addText".equals(name) && java.lang.Void.TYPE.equals(returnType) |
| && args.length == 1 && java.lang.String.class.equals(args[0])) { |
| addText = methods[i]; |
| } else if (name.startsWith("set") && java.lang.Void.TYPE.equals(returnType) |
| && args.length == 1 && !args[0].isArray()) { |
| String propName = getPropertyName(name, "set"); |
| if (attributeSetters.get(propName) != null) { |
| if (java.lang.String.class.equals(args[0])) { |
| /* |
| Ignore method m, as there is an overloaded |
| form of this method that takes in a |
| non-string argument, which gains higher |
| priority. |
| */ |
| continue; |
| } |
| /* |
| If the argument is not a String and if there |
| is an overloaded form of this method already defined, |
| we just override that with the new one. |
| This mechanism does not guarantee any specific order |
| in which the methods will be selected: so any code |
| that depends on the order in which "set" methods have |
| been defined, is not guaranteed to be selected in any |
| particular order. |
| */ |
| } |
| AttributeSetter as = createAttributeSetter(m, args[0], propName); |
| if (as != null) { |
| attributeTypes.put(propName, args[0]); |
| attributeSetters.put(propName, as); |
| } |
| } else if (name.startsWith("create") && !returnType.isArray() |
| && !returnType.isPrimitive() && args.length == 0) { |
| |
| String propName = getPropertyName(name, "create"); |
| // Check if a create of this property is already present |
| // add takes preference over create for CB purposes |
| if (nestedCreators.get(propName) == null) { |
| nestedTypes.put(propName, returnType); |
| nestedCreators.put(propName, new CreateNestedCreator(m)); |
| } |
| } else if (name.startsWith("addConfigured") |
| && java.lang.Void.TYPE.equals(returnType) && args.length == 1 |
| && !java.lang.String.class.equals(args[0]) |
| && !args[0].isArray() && !args[0].isPrimitive()) { |
| try { |
| Constructor constructor = null; |
| try { |
| constructor = args[0].getConstructor(new Class[] {}); |
| } catch (NoSuchMethodException ex) { |
| constructor = args[0].getConstructor(new Class[] {Project.class}); |
| } |
| String propName = getPropertyName(name, "addConfigured"); |
| nestedTypes.put(propName, args[0]); |
| nestedCreators.put(propName, new AddNestedCreator(m, |
| constructor, AddNestedCreator.ADD_CONFIGURED)); |
| } catch (NoSuchMethodException nse) { |
| // ignore |
| } |
| } else if (name.startsWith("add") |
| && java.lang.Void.TYPE.equals(returnType) && args.length == 1 |
| && !java.lang.String.class.equals(args[0]) |
| && !args[0].isArray() && !args[0].isPrimitive()) { |
| try { |
| Constructor constructor = null; |
| try { |
| constructor = args[0].getConstructor(new Class[] {}); |
| } catch (NoSuchMethodException ex) { |
| constructor = args[0].getConstructor(new Class[] {Project.class}); |
| } |
| String propName = getPropertyName(name, "add"); |
| if (nestedTypes.get(propName) != null) { |
| /* |
| * Ignore this method as there is an addConfigured |
| * form of this method that has a higher |
| * priority |
| */ |
| continue; |
| } |
| nestedTypes.put(propName, args[0]); |
| nestedCreators.put(propName, new AddNestedCreator(m, |
| constructor, AddNestedCreator.ADD)); |
| } catch (NoSuchMethodException nse) { |
| // ignore |
| } |
| } |
| } |
| } |
| |
| /** |
| * Certain set methods are part of the Ant core interface to tasks and |
| * therefore not to be considered for introspection |
| * |
| * @param name the name of the set method |
| * @param type the type of the set method's parameter |
| * @return true if the given set method is to be hidden. |
| */ |
| private boolean isHiddenSetMethod(String name, Class type) { |
| if ("setLocation".equals(name) && org.apache.tools.ant.Location.class.equals(type)) { |
| return true; |
| } |
| if ("setTaskType".equals(name) && java.lang.String.class.equals(type)) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Returns a helper for the given class, either from the cache |
| * or by creating a new instance. |
| * |
| * @param c The class for which a helper is required. |
| * Must not be <code>null</code>. |
| * |
| * @return a helper for the specified class |
| */ |
| public static synchronized IntrospectionHelper getHelper(Class c) { |
| return getHelper(null, c); |
| } |
| |
| /** |
| * Returns a helper for the given class, either from the cache |
| * or by creating a new instance. |
| * |
| * The method will make sure the helper will be cleaned up at the end of |
| * the project, and only one instance will be created for each class. |
| * |
| * @param p the project instance. Can be null, in which case the helper is not cached. |
| * @param c The class for which a helper is required. |
| * Must not be <code>null</code>. |
| * |
| * @return a helper for the specified class |
| */ |
| public static IntrospectionHelper getHelper(Project p, Class c) { |
| IntrospectionHelper ih = (IntrospectionHelper) HELPERS.get(c.getName()); |
| // If a helper cannot be found, or if the helper is for another |
| // classloader, create a new IH |
| if (ih == null || ih.bean != c) { |
| ih = new IntrospectionHelper(c); |
| if (p != null) { |
| // #30162: do *not* cache this if there is no project, as we |
| // cannot guarantee that the cache will be cleared. |
| HELPERS.put(c.getName(), ih); |
| } |
| } |
| return ih; |
| } |
| |
| /** |
| * Sets the named attribute in the given element, which is part of the |
| * given project. |
| * |
| * @param p The project containing the element. This is used when files |
| * need to be resolved. Must not be <code>null</code>. |
| * @param element The element to set the attribute in. Must not be |
| * <code>null</code>. |
| * @param attributeName The name of the attribute to set. Must not be |
| * <code>null</code>. |
| * @param value The value to set the attribute to. This may be interpreted |
| * or converted to the necessary type if the setter method |
| * doesn't just take a string. Must not be <code>null</code>. |
| * |
| * @exception BuildException if the introspected class doesn't support |
| * the given attribute, or if the setting |
| * method fails. |
| */ |
| public void setAttribute(Project p, Object element, String attributeName, |
| String value) throws BuildException { |
| AttributeSetter as = (AttributeSetter) attributeSetters.get( |
| attributeName.toLowerCase(Locale.US)); |
| if (as == null) { |
| if (element instanceof DynamicAttributeNS) { |
| DynamicAttributeNS dc = (DynamicAttributeNS) element; |
| String uriPlusPrefix = ProjectHelper.extractUriFromComponentName(attributeName); |
| String uri = ProjectHelper.extractUriFromComponentName(uriPlusPrefix); |
| String localName = ProjectHelper.extractNameFromComponentName(attributeName); |
| String qName = "".equals(uri) ? localName : uri + ":" + localName; |
| dc.setDynamicAttribute(uri, localName, qName, value); |
| return; |
| } |
| if (element instanceof DynamicAttribute) { |
| DynamicAttribute dc = (DynamicAttribute) element; |
| dc.setDynamicAttribute(attributeName.toLowerCase(Locale.US), value); |
| return; |
| } |
| if (attributeName.indexOf(':') != -1) { |
| return; // Ignore attribute from unknown uri's |
| } |
| String msg = getElementName(p, element) |
| + " doesn't support the \"" + attributeName + "\" attribute."; |
| throw new UnsupportedAttributeException(msg, attributeName); |
| } |
| try { |
| as.set(p, element, value); |
| } catch (IllegalAccessException ie) { |
| // impossible as getMethods should only return public methods |
| throw new BuildException(ie); |
| } catch (InvocationTargetException ite) { |
| throw extractBuildException(ite); |
| } |
| } |
| |
| /** |
| * Adds PCDATA to an element, using the element's |
| * <code>void addText(String)</code> method, if it has one. If no |
| * such method is present, a BuildException is thrown if the |
| * given text contains non-whitespace. |
| * |
| * @param project The project which the element is part of. |
| * Must not be <code>null</code>. |
| * @param element The element to add the text to. |
| * Must not be <code>null</code>. |
| * @param text The text to add. |
| * Must not be <code>null</code>. |
| * |
| * @exception BuildException if non-whitespace text is provided and no |
| * method is available to handle it, or if |
| * the handling method fails. |
| */ |
| public void addText(Project project, Object element, String text) |
| throws BuildException { |
| if (addText == null) { |
| text = text.trim(); |
| // Element doesn't handle text content |
| if (text.length() == 0) { |
| // Only whitespace - ignore |
| return; |
| } |
| // Not whitespace - fail |
| throw new BuildException(project.getElementName(element) |
| + " doesn't support nested text data (\"" + condenseText(text) + "\")."); |
| } |
| try { |
| addText.invoke(element, new Object[] {text}); |
| } catch (IllegalAccessException ie) { |
| // impossible as getMethods should only return public methods |
| throw new BuildException(ie); |
| } catch (InvocationTargetException ite) { |
| throw extractBuildException(ite); |
| } |
| } |
| |
| /** |
| * Utility method to throw a NotSupported exception |
| * |
| * @param project the Project instance. |
| * @param parent the object which doesn't support a requested element |
| * @param elementName the name of the Element which is trying to be created. |
| */ |
| public void throwNotSupported(Project project, Object parent, String elementName) { |
| String msg = project.getElementName(parent) |
| + " doesn't support the nested \"" + elementName + "\" element."; |
| throw new UnsupportedElementException(msg, elementName); |
| } |
| |
| /** |
| * Get the specific NestedCreator for a given project/parent/element combination |
| * @param project ant project |
| * @param parentUri URI of the parent. |
| * @param parent the parent class |
| * @param elementName element to work with. This can contain |
| * a URI,localname tuple of of the form uri:localname |
| * @param child the bit of XML to work with |
| * @return a nested creator that can handle the child elements. |
| * @throws BuildException if the parent does not support child elements of that name |
| */ |
| private NestedCreator getNestedCreator( |
| Project project, String parentUri, Object parent, |
| String elementName, UnknownElement child) throws BuildException { |
| |
| String uri = ProjectHelper.extractUriFromComponentName(elementName); |
| String name = ProjectHelper.extractNameFromComponentName(elementName); |
| |
| if (uri.equals(ProjectHelper.ANT_CORE_URI)) { |
| uri = ""; |
| } |
| if (parentUri.equals(ProjectHelper.ANT_CORE_URI)) { |
| parentUri = ""; |
| } |
| NestedCreator nc = null; |
| if (uri.equals(parentUri) || uri.length() == 0) { |
| nc = (NestedCreator) nestedCreators.get(name.toLowerCase(Locale.US)); |
| } |
| if (nc == null) { |
| nc = createAddTypeCreator(project, parent, elementName); |
| } |
| if (nc == null && parent instanceof DynamicElementNS) { |
| DynamicElementNS dc = (DynamicElementNS) parent; |
| String qName = child == null ? name : child.getQName(); |
| final Object nestedElement = dc.createDynamicElement( |
| child == null ? "" : child.getNamespace(), name, qName); |
| if (nestedElement != null) { |
| nc = new NestedCreator(null) { |
| Object create(Project project, Object parent, Object ignore) { |
| return nestedElement; |
| } |
| }; |
| } |
| } |
| if (nc == null && parent instanceof DynamicElement) { |
| DynamicElement dc = (DynamicElement) parent; |
| final Object nestedElement = dc.createDynamicElement(name.toLowerCase(Locale.US)); |
| if (nestedElement != null) { |
| nc = new NestedCreator(null) { |
| Object create(Project project, Object parent, Object ignore) { |
| return nestedElement; |
| } |
| }; |
| } |
| } |
| if (nc == null) { |
| throwNotSupported(project, parent, elementName); |
| } |
| return nc; |
| } |
| |
| /** |
| * Creates a named nested element. Depending on the results of the |
| * initial introspection, either a method in the given parent instance |
| * or a simple no-arg constructor is used to create an instance of the |
| * specified element type. |
| * |
| * @param project Project to which the parent object belongs. |
| * Must not be <code>null</code>. If the resulting |
| * object is an instance of ProjectComponent, its |
| * Project reference is set to this parameter value. |
| * @param parent Parent object used to create the instance. |
| * Must not be <code>null</code>. |
| * @param elementName Name of the element to create an instance of. |
| * Must not be <code>null</code>. |
| * |
| * @return an instance of the specified element type |
| * @deprecated since 1.6.x. |
| * This is not a namespace aware method. |
| * |
| * @exception BuildException if no method is available to create the |
| * element instance, or if the creating method fails. |
| */ |
| public Object createElement(Project project, Object parent, String elementName) |
| throws BuildException { |
| NestedCreator nc = getNestedCreator(project, "", parent, elementName, null); |
| try { |
| Object nestedElement = nc.create(project, parent, null); |
| if (project != null) { |
| project.setProjectReference(nestedElement); |
| } |
| return nestedElement; |
| } catch (IllegalAccessException ie) { |
| // impossible as getMethods should only return public methods |
| throw new BuildException(ie); |
| } catch (InstantiationException ine) { |
| // impossible as getMethods should only return public methods |
| throw new BuildException(ine); |
| } catch (InvocationTargetException ite) { |
| throw extractBuildException(ite); |
| } |
| } |
| |
| /** |
| * returns an object that creates and stores an object |
| * for an element of a parent. |
| * |
| * @param project Project to which the parent object belongs. |
| * @param parentUri The namespace uri of the parent object. |
| * @param parent Parent object used to create the creator object to |
| * create and store and instance of a subelement. |
| * @param elementName Name of the element to create an instance of. |
| * @param ue The unknown element associated with the element. |
| * @return a creator object to create and store the element instance. |
| */ |
| public Creator getElementCreator( |
| Project project, String parentUri, Object parent, String elementName, UnknownElement ue) { |
| NestedCreator nc = getNestedCreator(project, parentUri, parent, elementName, ue); |
| return new Creator(project, parent, nc); |
| } |
| |
| /** |
| * Indicates whether the introspected class is a dynamic one, |
| * supporting arbitrary nested elements and/or attributes. |
| * |
| * @return <code>true<code> if the introspected class is dynamic; |
| * <code>false<code> otherwise. |
| * @since Ant 1.6.3 |
| * |
| * @see DynamicElement |
| * @see DynamicElementNS |
| */ |
| public boolean isDynamic() { |
| return DynamicElement.class.isAssignableFrom(bean) |
| || DynamicElementNS.class.isAssignableFrom(bean); |
| } |
| |
| /** |
| * Indicates whether the introspected class is a task container, |
| * supporting arbitrary nested tasks/types. |
| * |
| * @return <code>true<code> if the introspected class is a container; |
| * <code>false<code> otherwise. |
| * @since Ant 1.6.3 |
| * |
| * @see TaskContainer |
| */ |
| public boolean isContainer() { |
| return TaskContainer.class.isAssignableFrom(bean); |
| } |
| |
| /** |
| * Indicates if this element supports a nested element of the |
| * given name. |
| * |
| * @param elementName the name of the nested element being checked |
| * |
| * @return true if the given nested element is supported |
| */ |
| public boolean supportsNestedElement(String elementName) { |
| return supportsNestedElement("", elementName); |
| } |
| |
| /** |
| * Indicate if this element supports a nested element of the |
| * given name. |
| * |
| * @param parentUri the uri of the parent |
| * @param elementName the name of the nested element being checked |
| * |
| * @return true if the given nested element is supported |
| */ |
| public boolean supportsNestedElement(String parentUri, String elementName) { |
| if (isDynamic() || addTypeMethods.size() > 0) { |
| return true; |
| } |
| String name = ProjectHelper.extractNameFromComponentName(elementName); |
| if (!nestedCreators.containsKey(name.toLowerCase(Locale.US))) { |
| return false; |
| } |
| String uri = ProjectHelper.extractUriFromComponentName(elementName); |
| if (uri.equals(ProjectHelper.ANT_CORE_URI)) { |
| uri = ""; |
| } |
| if ("".equals(uri)) { |
| return true; |
| } |
| if (parentUri.equals(ProjectHelper.ANT_CORE_URI)) { |
| parentUri = ""; |
| } |
| return uri.equals(parentUri); |
| } |
| |
| /** |
| * Stores a named nested element using a storage method determined |
| * by the initial introspection. If no appropriate storage method |
| * is available, this method returns immediately. |
| * |
| * @param project Ignored in this implementation. |
| * May be <code>null</code>. |
| * |
| * @param parent Parent instance to store the child in. |
| * Must not be <code>null</code>. |
| * |
| * @param child Child instance to store in the parent. |
| * Should not be <code>null</code>. |
| * |
| * @param elementName Name of the child element to store. |
| * May be <code>null</code>, in which case |
| * this method returns immediately. |
| * |
| * @exception BuildException if the storage method fails. |
| */ |
| public void storeElement(Project project, Object parent, Object child, |
| String elementName) throws BuildException { |
| if (elementName == null) { |
| return; |
| } |
| NestedCreator ns = (NestedCreator) nestedCreators.get(elementName.toLowerCase(Locale.US)); |
| if (ns == null) { |
| return; |
| } |
| try { |
| ns.store(parent, child); |
| } catch (IllegalAccessException ie) { |
| // impossible as getMethods should only return public methods |
| throw new BuildException(ie); |
| } catch (InstantiationException ine) { |
| // impossible as getMethods should only return public methods |
| throw new BuildException(ine); |
| } catch (InvocationTargetException ite) { |
| throw extractBuildException(ite); |
| } |
| } |
| |
| /** |
| * Helper method to extract the inner fault from an {@link InvocationTargetException}, and turn |
| * it into a BuildException. If it is already a BuildException, it is type cast and returned; if |
| * not a new BuildException is created containing the child as nested text. |
| * @param ite |
| * @return the nested exception |
| */ |
| private static BuildException extractBuildException(InvocationTargetException ite) { |
| Throwable t = ite.getTargetException(); |
| if (t instanceof BuildException) { |
| return (BuildException) t; |
| } |
| return new BuildException(t); |
| } |
| |
| /** |
| * Returns the type of a named nested element. |
| * |
| * @param elementName The name of the element to find the type of. |
| * Must not be <code>null</code>. |
| * |
| * @return the type of the nested element with the specified name. |
| * This will never be <code>null</code>. |
| * |
| * @exception BuildException if the introspected class does not |
| * support the named nested element. |
| */ |
| public Class getElementType(String elementName) throws BuildException { |
| Class nt = (Class) nestedTypes.get(elementName); |
| if (nt == null) { |
| throw new UnsupportedElementException("Class " |
| + bean.getName() + " doesn't support the nested \"" |
| + elementName + "\" element.", elementName); |
| } |
| return nt; |
| } |
| |
| /** |
| * Returns the type of a named attribute. |
| * |
| * @param attributeName The name of the attribute to find the type of. |
| * Must not be <code>null</code>. |
| * |
| * @return the type of the attribute with the specified name. |
| * This will never be <code>null</code>. |
| * |
| * @exception BuildException if the introspected class does not |
| * support the named attribute. |
| */ |
| public Class getAttributeType(String attributeName) throws BuildException { |
| Class at = (Class) attributeTypes.get(attributeName); |
| if (at == null) { |
| throw new UnsupportedAttributeException("Class " |
| + bean.getName() + " doesn't support the \"" |
| + attributeName + "\" attribute.", attributeName); |
| } |
| return at; |
| } |
| |
| /** |
| * Returns the addText method when the introspected |
| * class supports nested text. |
| * |
| * @return the method on this introspected class that adds nested text. |
| * Cannot be <code>null</code>. |
| * @throws BuildException if the introspected class does not |
| * support the nested text. |
| * @since Ant 1.6.3 |
| */ |
| public Method getAddTextMethod() throws BuildException { |
| if (!supportsCharacters()) { |
| throw new BuildException("Class " + bean.getName() |
| + " doesn't support nested text data."); |
| } |
| return addText; |
| } |
| |
| /** |
| * Returns the adder or creator method of a named nested element. |
| * |
| * @param elementName The name of the attribute to find the setter |
| * method of. Must not be <code>null</code>. |
| * @return the method on this introspected class that adds or creates this |
| * nested element. Can be <code>null</code> when the introspected |
| * class is a dynamic configurator! |
| * @throws BuildException if the introspected class does not |
| * support the named nested element. |
| * @since Ant 1.6.3 |
| */ |
| public Method getElementMethod(String elementName) throws BuildException { |
| Object creator = nestedCreators.get(elementName); |
| if (creator == null) { |
| throw new UnsupportedElementException("Class " |
| + bean.getName() + " doesn't support the nested \"" |
| + elementName + "\" element.", elementName); |
| } |
| return ((NestedCreator) creator).method; |
| } |
| |
| /** |
| * Returns the setter method of a named attribute. |
| * |
| * @param attributeName The name of the attribute to find the setter |
| * method of. Must not be <code>null</code>. |
| * @return the method on this introspected class that sets this attribute. |
| * This will never be <code>null</code>. |
| * @throws BuildException if the introspected class does not |
| * support the named attribute. |
| * @since Ant 1.6.3 |
| */ |
| public Method getAttributeMethod(String attributeName) throws BuildException { |
| Object setter = attributeSetters.get(attributeName); |
| if (setter == null) { |
| throw new UnsupportedAttributeException("Class " |
| + bean.getName() + " doesn't support the \"" |
| + attributeName + "\" attribute.", attributeName); |
| } |
| return ((AttributeSetter) setter).method; |
| } |
| |
| /** |
| * Returns whether or not the introspected class supports PCDATA. |
| * |
| * @return whether or not the introspected class supports PCDATA. |
| */ |
| public boolean supportsCharacters() { |
| return addText != null; |
| } |
| |
| /** |
| * Returns an enumeration of the names of the attributes supported by the introspected class. |
| * |
| * @return an enumeration of the names of the attributes supported by the introspected class. |
| * @see #getAttributeMap |
| */ |
| public Enumeration getAttributes() { |
| return attributeSetters.keys(); |
| } |
| |
| /** |
| * Returns a read-only map of attributes supported by the introspected class. |
| * |
| * @return an attribute name to attribute <code>Class</code> |
| * unmodifiable map. Can be empty, but never <code>null</code>. |
| * @since Ant 1.6.3 |
| */ |
| public Map getAttributeMap() { |
| return attributeTypes.isEmpty() |
| ? Collections.EMPTY_MAP : Collections.unmodifiableMap(attributeTypes); |
| } |
| |
| /** |
| * Returns an enumeration of the names of the nested elements supported |
| * by the introspected class. |
| * |
| * @return an enumeration of the names of the nested elements supported |
| * by the introspected class. |
| * @see #getNestedElementMap |
| */ |
| public Enumeration getNestedElements() { |
| return nestedTypes.keys(); |
| } |
| |
| /** |
| * Returns a read-only map of nested elements supported |
| * by the introspected class. |
| * |
| * @return a nested-element name to nested-element <code>Class</code> |
| * unmodifiable map. Can be empty, but never <code>null</code>. |
| * @since Ant 1.6.3 |
| */ |
| public Map getNestedElementMap() { |
| return nestedTypes.isEmpty() |
| ? Collections.EMPTY_MAP : Collections.unmodifiableMap(nestedTypes); |
| } |
| |
| /** |
| * Returns a read-only list of extension points supported |
| * by the introspected class. |
| * <p> |
| * A task/type or nested element with void methods named <code>add()<code> |
| * or <code>addConfigured()</code>, taking a single class or interface |
| * argument, supports extensions point. This method returns the list of |
| * all these <em>void add[Configured](type)</em> methods. |
| * |
| * @return a list of void, single argument add() or addConfigured() |
| * <code>Method<code>s of all supported extension points. |
| * These methods are sorted such that if the argument type of a |
| * method derives from another type also an argument of a method |
| * of this list, the method with the most derived argument will |
| * always appear first. Can be empty, but never <code>null</code>. |
| * @since Ant 1.6.3 |
| */ |
| public List getExtensionPoints() { |
| return addTypeMethods.isEmpty() |
| ? Collections.EMPTY_LIST : Collections.unmodifiableList(addTypeMethods); |
| } |
| |
| /** |
| * Creates an implementation of AttributeSetter for the given |
| * attribute type. Conversions (where necessary) are automatically |
| * made for the following types: |
| * <ul> |
| * <li>String (left as it is) |
| * <li>Character/char (first character is used) |
| * <li>Boolean/boolean |
| * ({@link Project#toBoolean(String) Project.toBoolean(String)} is used) |
| * <li>Class (Class.forName is used) |
| * <li>File (resolved relative to the appropriate project) |
| * <li>Path (resolve relative to the appropriate project) |
| * <li>EnumeratedAttribute (uses its own |
| * {@link EnumeratedAttribute#setValue(String) setValue} method) |
| * <li>Other primitive types (wrapper classes are used with constructors |
| * taking String) |
| * </ul> |
| * |
| * If none of the above covers the given parameters, a constructor for the |
| * appropriate class taking a String parameter is used if it is available. |
| * |
| * @param m The method to invoke on the bean when the setter is invoked. |
| * Must not be <code>null</code>. |
| * @param arg The type of the single argument of the bean's method. |
| * Must not be <code>null</code>. |
| * @param attrName the name of the attribute for which the setter is being |
| * created. |
| * |
| * @return an appropriate AttributeSetter instance, or <code>null</code> |
| * if no appropriate conversion is available. |
| */ |
| private AttributeSetter createAttributeSetter(final Method m, |
| Class arg, |
| final String attrName) { |
| // use wrappers for primitive classes, e.g. int and |
| // Integer are treated identically |
| final Class reflectedArg = PRIMITIVE_TYPE_MAP.containsKey(arg) |
| ? (Class) PRIMITIVE_TYPE_MAP.get(arg) : arg; |
| |
| // simplest case - setAttribute expects String |
| if (java.lang.String.class.equals(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException { |
| m.invoke(parent, (Object[]) new String[] {value}); |
| } |
| }; |
| } |
| // char and Character get special treatment - take the first character |
| if (java.lang.Character.class.equals(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException { |
| if (value.length() == 0) { |
| throw new BuildException("The value \"\" is not a " |
| + "legal value for attribute \"" + attrName + "\""); |
| } |
| m.invoke(parent, (Object[]) new Character[] {new Character(value.charAt(0))}); |
| } |
| }; |
| } |
| // boolean and Boolean get special treatment because we have a nice method in Project |
| if (java.lang.Boolean.class.equals(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException { |
| m.invoke(parent, (Object[]) new Boolean[] { |
| Project.toBoolean(value) ? Boolean.TRUE : Boolean.FALSE }); |
| } |
| }; |
| } |
| // Class doesn't have a String constructor but a decent factory method |
| if (java.lang.Class.class.equals(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException, BuildException { |
| try { |
| m.invoke(parent, new Object[] {Class.forName(value)}); |
| } catch (ClassNotFoundException ce) { |
| throw new BuildException(ce); |
| } |
| } |
| }; |
| } |
| // resolve relative paths through Project |
| if (java.io.File.class.equals(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException { |
| m.invoke(parent, new Object[] {p.resolveFile(value)}); |
| } |
| }; |
| } |
| // EnumeratedAttributes have their own helper class |
| if (EnumeratedAttribute.class.isAssignableFrom(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException, BuildException { |
| try { |
| EnumeratedAttribute ea = (EnumeratedAttribute) reflectedArg.newInstance(); |
| ea.setValue(value); |
| m.invoke(parent, new Object[] {ea}); |
| } catch (InstantiationException ie) { |
| throw new BuildException(ie); |
| } |
| } |
| }; |
| } |
| Class enumClass = null; |
| try { |
| enumClass = Class.forName("java.lang.Enum"); |
| } catch (ClassNotFoundException e) { |
| //ignore |
| } |
| if (enumClass != null && enumClass.isAssignableFrom(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException, BuildException { |
| try { |
| m.invoke(parent, new Object[] { |
| reflectedArg.getMethod("valueOf", new Class[] {String.class}). |
| invoke(null, new Object[] {value})}); |
| } catch (InvocationTargetException x) { |
| //there is specific logic here for the value being out of the allowed |
| //set of enumerations. |
| if (x.getTargetException() instanceof IllegalArgumentException) { |
| throw new BuildException("'" + value + "' is not a permitted value for " |
| + reflectedArg.getName()); |
| } |
| //only if the exception is not an IllegalArgument do we request the |
| //BuildException via extractBuildException(): |
| throw extractBuildException(x); |
| } catch (Exception x) { |
| //any other failure of invoke() to work. |
| throw new BuildException(x); |
| } |
| } |
| }; |
| } |
| if (java.lang.Long.class.equals(reflectedArg)) { |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException, BuildException { |
| try { |
| m.invoke(parent, new Object[] { |
| new Long(StringUtils.parseHumanSizes(value)) }); |
| } catch (InvocationTargetException e) { |
| throw e; |
| } catch (IllegalAccessException e) { |
| throw e; |
| } catch (Exception e) { |
| throw new BuildException(e); |
| } |
| } |
| }; |
| } |
| // worst case. look for a public String constructor and use it |
| // also supports new Whatever(Project, String) as for Path or Reference |
| // This is used (deliberately) for all primitives/wrappers other than |
| // char, boolean, and long. |
| boolean includeProject; |
| Constructor c; |
| try { |
| // First try with Project. |
| c = reflectedArg.getConstructor(new Class[] {Project.class, String.class}); |
| includeProject = true; |
| } catch (NoSuchMethodException nme) { |
| // OK, try without. |
| try { |
| c = reflectedArg.getConstructor(new Class[] {String.class}); |
| includeProject = false; |
| } catch (NoSuchMethodException nme2) { |
| // Well, no matching constructor. |
| return null; |
| } |
| } |
| final boolean finalIncludeProject = includeProject; |
| final Constructor finalConstructor = c; |
| |
| return new AttributeSetter(m) { |
| public void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException, BuildException { |
| try { |
| Object[] args = finalIncludeProject |
| ? new Object[] {p, value} : new Object[] {value}; |
| |
| Object attribute = finalConstructor.newInstance(args); |
| if (p != null) { |
| p.setProjectReference(attribute); |
| } |
| m.invoke(parent, new Object[] {attribute}); |
| } catch (InstantiationException ie) { |
| throw new BuildException(ie); |
| } |
| } |
| }; |
| } |
| |
| /** |
| * Returns a description of the type of the given element in |
| * relation to a given project. This is used for logging purposes |
| * when the element is asked to cope with some data it has no way of handling. |
| * |
| * @param project The project the element is defined in. Must not be <code>null</code>. |
| * |
| * @param element The element to describe. Must not be <code>null</code>. |
| * |
| * @return a description of the element type |
| */ |
| private String getElementName(Project project, Object element) { |
| return project.getElementName(element); |
| } |
| |
| /** |
| * Extracts the name of a property from a method name by subtracting |
| * a given prefix and converting into lower case. It is up to calling |
| * code to make sure the method name does actually begin with the |
| * specified prefix - no checking is done in this method. |
| * |
| * @param methodName The name of the method in question. Must not be <code>null</code>. |
| * @param prefix The prefix to remove. Must not be <code>null</code>. |
| * |
| * @return the lower-cased method name with the prefix removed. |
| */ |
| private static String getPropertyName(String methodName, String prefix) { |
| return methodName.substring(prefix.length()).toLowerCase(Locale.US); |
| } |
| |
| /** |
| * creator - allows use of create/store external |
| * to IntrospectionHelper. |
| * The class is final as it has a private constructor. |
| */ |
| public static final class Creator { |
| private NestedCreator nestedCreator; |
| private Object parent; |
| private Project project; |
| private Object nestedObject; |
| private String polyType; |
| |
| /** |
| * Creates a new Creator instance. |
| * This object is given to the UnknownElement to create |
| * objects for sub-elements. UnknownElement calls |
| * create to create an object, the object then gets |
| * configured and then UnknownElement calls store. |
| * SetPolyType may be used to override the type used |
| * to create the object with. SetPolyType gets called before create. |
| * |
| * @param project the current project |
| * @param parent the parent object to create the object in |
| * @param nestedCreator the nested creator object to use |
| */ |
| private Creator(Project project, Object parent, NestedCreator nestedCreator) { |
| this.project = project; |
| this.parent = parent; |
| this.nestedCreator = nestedCreator; |
| } |
| |
| /** |
| * Used to override the class used to create the object. |
| * |
| * @param polyType a ant component type name |
| */ |
| public void setPolyType(String polyType) { |
| this.polyType = polyType; |
| } |
| |
| /** |
| * Create an object using this creator, which is determined by introspection. |
| * |
| * @return the created object |
| */ |
| public Object create() { |
| if (polyType != null) { |
| if (!nestedCreator.isPolyMorphic()) { |
| throw new BuildException( |
| "Not allowed to use the polymorphic form for this element"); |
| } |
| ComponentHelper helper = ComponentHelper.getComponentHelper(project); |
| nestedObject = helper.createComponent(polyType); |
| if (nestedObject == null) { |
| throw new BuildException("Unable to create object of type " + polyType); |
| } |
| } |
| try { |
| nestedObject = nestedCreator.create(project, parent, nestedObject); |
| if (project != null) { |
| project.setProjectReference(nestedObject); |
| } |
| return nestedObject; |
| } catch (IllegalAccessException ex) { |
| throw new BuildException(ex); |
| } catch (InstantiationException ex) { |
| throw new BuildException(ex); |
| } catch (IllegalArgumentException ex) { |
| if (polyType == null) { |
| throw ex; |
| } |
| throw new BuildException("Invalid type used " + polyType); |
| } catch (InvocationTargetException ex) { |
| throw extractBuildException(ex); |
| } |
| } |
| |
| /** |
| * @return the real object (used currently only for presetdef). |
| */ |
| public Object getRealObject() { |
| return nestedCreator.getRealObject(); |
| } |
| |
| /** |
| * Stores the nested element object using a storage method determined by introspection. |
| * |
| */ |
| public void store() { |
| try { |
| nestedCreator.store(parent, nestedObject); |
| } catch (IllegalAccessException ex) { |
| throw new BuildException(ex); |
| } catch (InstantiationException ex) { |
| throw new BuildException(ex); |
| } catch (IllegalArgumentException ex) { |
| if (polyType == null) { |
| throw ex; |
| } |
| throw new BuildException("Invalid type used " + polyType); |
| } catch (InvocationTargetException ex) { |
| throw extractBuildException(ex); |
| } |
| } |
| } |
| |
| /** |
| * Internal interface used to create nested elements. Not documented |
| * in detail for reasons of source code readability. |
| */ |
| private abstract static class NestedCreator { |
| private Method method; // the method called to add/create the nested element |
| |
| protected NestedCreator(Method m) { |
| method = m; |
| } |
| Method getMethod() { |
| return method; |
| } |
| boolean isPolyMorphic() { |
| return false; |
| } |
| Object getRealObject() { |
| return null; |
| } |
| abstract Object create(Project project, Object parent, Object child) |
| throws InvocationTargetException, IllegalAccessException, InstantiationException; |
| |
| void store(Object parent, Object child) |
| throws InvocationTargetException, IllegalAccessException, InstantiationException { |
| // DO NOTHING |
| } |
| } |
| |
| private static class CreateNestedCreator extends NestedCreator { |
| CreateNestedCreator(Method m) { |
| super(m); |
| } |
| |
| Object create(Project project, Object parent, Object ignore) |
| throws InvocationTargetException, IllegalAccessException { |
| return getMethod().invoke(parent, new Object[] {}); |
| } |
| } |
| |
| /** Version to use for addXXX and addConfiguredXXX */ |
| private static class AddNestedCreator extends NestedCreator { |
| |
| static final int ADD = 1; |
| static final int ADD_CONFIGURED = 2; |
| |
| private Constructor constructor; |
| private int behavior; // ADD or ADD_CONFIGURED |
| |
| AddNestedCreator(Method m, Constructor c, int behavior) { |
| super(m); |
| this.constructor = c; |
| this.behavior = behavior; |
| } |
| |
| boolean isPolyMorphic() { |
| return true; |
| } |
| |
| Object create(Project project, Object parent, Object child) |
| throws InvocationTargetException, IllegalAccessException, InstantiationException { |
| if (child == null) { |
| child = constructor.newInstance( |
| constructor.getParameterTypes().length == 0 |
| ? new Object[] {} : new Object[] {project}); |
| } |
| if (child instanceof PreSetDef.PreSetDefinition) { |
| child = ((PreSetDef.PreSetDefinition) child).createObject(project); |
| } |
| if (behavior == ADD) { |
| istore(parent, child); |
| } |
| return child; |
| } |
| |
| void store(Object parent, Object child) |
| throws InvocationTargetException, IllegalAccessException, InstantiationException { |
| if (behavior == ADD_CONFIGURED) { |
| istore(parent, child); |
| } |
| } |
| |
| private void istore(Object parent, Object child) |
| throws InvocationTargetException, IllegalAccessException, InstantiationException { |
| getMethod().invoke(parent, new Object[] {child}); |
| } |
| } |
| |
| /** |
| * Internal interface used to setting element attributes. Not documented |
| * in detail for reasons of source code readability. |
| */ |
| private abstract static class AttributeSetter { |
| private Method method; // the method called to set the attribute |
| |
| protected AttributeSetter(Method m) { |
| method = m; |
| } |
| abstract void set(Project p, Object parent, String value) |
| throws InvocationTargetException, IllegalAccessException, BuildException; |
| } |
| |
| /** |
| * Clears the static cache of on build finished. |
| */ |
| public static void clearCache() { |
| HELPERS.clear(); |
| } |
| |
| /** |
| * Create a NestedCreator for the given element. |
| * @param project owning project |
| * @param parent Parent object used to create the instance. |
| * @param elementName name of the element |
| * @return a nested creator, or null if there is no component of the given name, or it |
| * has no matching add type methods |
| * @throws BuildException |
| */ |
| private NestedCreator createAddTypeCreator( |
| Project project, Object parent, String elementName) throws BuildException { |
| if (addTypeMethods.size() == 0) { |
| return null; |
| } |
| ComponentHelper helper = ComponentHelper.getComponentHelper(project); |
| |
| Object addedObject = null; |
| Method addMethod = null; |
| Class clazz = helper.getComponentClass(elementName); |
| if (clazz == null) { |
| return null; |
| } |
| addMethod = findMatchingMethod(clazz, addTypeMethods); |
| if (addMethod == null) { |
| return null; |
| } |
| addedObject = helper.createComponent(elementName); |
| if (addedObject == null) { |
| return null; |
| } |
| Object rObject = addedObject; |
| if (addedObject instanceof PreSetDef.PreSetDefinition) { |
| rObject = ((PreSetDef.PreSetDefinition) addedObject).createObject(project); |
| } |
| final Object nestedObject = addedObject; |
| final Object realObject = rObject; |
| |
| return new NestedCreator(addMethod) { |
| Object create(Project project, Object parent, Object ignore) |
| throws InvocationTargetException, IllegalAccessException { |
| if (!getMethod().getName().endsWith("Configured")) { |
| getMethod().invoke(parent, new Object[] {realObject}); |
| } |
| return nestedObject; |
| } |
| |
| Object getRealObject() { |
| return realObject; |
| } |
| |
| void store(Object parent, Object child) throws InvocationTargetException, |
| IllegalAccessException, InstantiationException { |
| if (getMethod().getName().endsWith("Configured")) { |
| getMethod().invoke(parent, new Object[] {realObject}); |
| } |
| } |
| }; |
| } |
| |
| /** |
| * Inserts an add or addConfigured method into |
| * the addTypeMethods array. The array is |
| * ordered so that the more derived classes are first. |
| * If both add and addConfigured are present, the addConfigured will take priority. |
| * @param method the <code>Method</code> to insert. |
| */ |
| private void insertAddTypeMethod(Method method) { |
| Class argClass = method.getParameterTypes()[0]; |
| for (int c = 0; c < addTypeMethods.size(); ++c) { |
| Method current = (Method) addTypeMethods.get(c); |
| if (current.getParameterTypes()[0].equals(argClass)) { |
| if (method.getName().equals("addConfigured")) { |
| // add configured replaces the add method |
| addTypeMethods.set(c, method); |
| } |
| return; // Already present |
| } |
| if (current.getParameterTypes()[0].isAssignableFrom(argClass)) { |
| addTypeMethods.add(c, method); |
| return; // higher derived |
| } |
| } |
| addTypeMethods.add(method); |
| } |
| |
| /** |
| * Search the list of methods to find the first method |
| * that has a parameter that accepts the nested element object. |
| * @param paramClass the <code>Class</code> type to search for. |
| * @param methods the <code>List</code> of methods to search. |
| * @return a matching <code>Method</code>; null if none found. |
| */ |
| private Method findMatchingMethod(Class paramClass, List methods) { |
| Class matchedClass = null; |
| Method matchedMethod = null; |
| |
| for (int i = 0; i < methods.size(); ++i) { |
| Method method = (Method) methods.get(i); |
| Class methodClass = method.getParameterTypes()[0]; |
| if (methodClass.isAssignableFrom(paramClass)) { |
| if (matchedClass == null) { |
| matchedClass = methodClass; |
| matchedMethod = method; |
| } else if (!methodClass.isAssignableFrom(matchedClass)) { |
| throw new BuildException("ambiguous: types " + matchedClass.getName() + " and " |
| + methodClass.getName() + " match " + paramClass.getName()); |
| } |
| } |
| } |
| return matchedMethod; |
| } |
| |
| private String condenseText(final String text) { |
| if (text.length() <= MAX_REPORT_NESTED_TEXT) { |
| return text; |
| } |
| int ends = (MAX_REPORT_NESTED_TEXT - ELLIPSIS.length()) / 2; |
| return new StringBuffer(text).replace(ends, text.length() - ends, ELLIPSIS).toString(); |
| } |
| } |
