| /* |
| * |
| * 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.qpid.server.model; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.lang.reflect.Modifier; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.regex.Pattern; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class ConfiguredAutomatedAttribute<C extends ConfiguredObject, T> extends ConfiguredObjectMethodAttribute<C,T> |
| implements ConfiguredSettableAttribute<C, T> |
| { |
| private static final Logger LOGGER = LoggerFactory.getLogger(ConfiguredAutomatedAttribute.class); |
| |
| private final ManagedAttribute _annotation; |
| private final Method _validValuesMethod; |
| private final Pattern _secureValuePattern; |
| private final AttributeValueConverter<T> _converter; |
| |
| ConfiguredAutomatedAttribute(final Class<C> clazz, |
| final Method getter, |
| final ManagedAttribute annotation) |
| { |
| super(clazz, getter); |
| _converter = AttributeValueConverter.getConverter(getType(), getter.getGenericReturnType()); |
| |
| _annotation = annotation; |
| Method validValuesMethod = null; |
| |
| if(_annotation.validValues().length == 1) |
| { |
| String validValue = _annotation.validValues()[0]; |
| |
| validValuesMethod = getValidValuesMethod(validValue, clazz); |
| } |
| _validValuesMethod = validValuesMethod; |
| |
| String secureValueFilter = _annotation.secureValueFilter(); |
| if (secureValueFilter == null || "".equals(secureValueFilter)) |
| { |
| _secureValuePattern = null; |
| } |
| else |
| { |
| _secureValuePattern = Pattern.compile(secureValueFilter); |
| } |
| } |
| |
| @Override |
| public final AttributeValueConverter<T> getConverter() |
| { |
| return _converter; |
| } |
| |
| |
| private Method getValidValuesMethod(final String validValue, final Class<C> clazz) |
| { |
| if(validValue.matches("([\\w][\\w\\d_]+\\.)+[\\w][\\w\\d_\\$]*#[\\w\\d_]+\\s*\\(\\s*\\)")) |
| { |
| String function = validValue; |
| try |
| { |
| String className = function.split("#")[0].trim(); |
| String methodName = function.split("#")[1].split("\\(")[0].trim(); |
| Class<?> validValueCalculatingClass = Class.forName(className); |
| Method method = validValueCalculatingClass.getMethod(methodName); |
| if (Modifier.isStatic(method.getModifiers()) && Modifier.isPublic(method.getModifiers())) |
| { |
| if (Collection.class.isAssignableFrom(method.getReturnType())) |
| { |
| if (method.getGenericReturnType() instanceof ParameterizedType) |
| { |
| Type parameterizedType = |
| ((ParameterizedType) method.getGenericReturnType()).getActualTypeArguments()[0]; |
| if (parameterizedType == String.class) |
| { |
| return method; |
| } |
| } |
| } |
| } |
| |
| } |
| catch (ClassNotFoundException | NoSuchMethodException e) |
| { |
| LOGGER.warn("The validValues of the " + getName() + " attribute in class " + clazz.getSimpleName() |
| + " has value '" + validValue + "' which looks like it should be a method," |
| + " but no such method could be used.", e ); |
| } |
| } |
| return null; |
| } |
| |
| @Override |
| public boolean isAutomated() |
| { |
| return true; |
| } |
| |
| @Override |
| public boolean isDerived() |
| { |
| return false; |
| } |
| |
| @Override |
| public String defaultValue() |
| { |
| return _annotation.defaultValue(); |
| } |
| |
| @Override |
| public boolean isSecure() |
| { |
| return _annotation.secure(); |
| } |
| |
| @Override |
| public boolean isMandatory() |
| { |
| return _annotation.mandatory(); |
| } |
| |
| @Override |
| public boolean isImmutable() |
| { |
| return _annotation.immutable(); |
| } |
| |
| @Override |
| public boolean isPersisted() |
| { |
| return _annotation.persist(); |
| } |
| |
| @Override |
| public boolean isOversized() |
| { |
| return _annotation.oversize(); |
| } |
| |
| @Override |
| public boolean updateAttributeDespiteUnchangedValue() |
| { |
| return _annotation.updateAttributeDespiteUnchangedValue(); |
| } |
| |
| @Override |
| public String getOversizedAltText() |
| { |
| return _annotation.oversizedAltText(); |
| } |
| |
| @Override |
| public Initialization getInitialization() |
| { |
| return _annotation.initialization(); |
| } |
| |
| @Override |
| public String getDescription() |
| { |
| return _annotation.description(); |
| } |
| |
| @Override |
| public Pattern getSecureValueFilter() |
| { |
| return _secureValuePattern; |
| } |
| |
| @Override |
| public Collection<String> validValues() |
| { |
| if(_validValuesMethod != null) |
| { |
| try |
| { |
| return (Collection<String>) _validValuesMethod.invoke(null); |
| } |
| catch (InvocationTargetException | IllegalAccessException e) |
| { |
| LOGGER.warn("Could not execute the validValues generation method " + _validValuesMethod.getName(), e); |
| return Collections.emptySet(); |
| } |
| } |
| else if (_annotation.validValues().length == 0 && getGetter().getReturnType().isEnum()) |
| { |
| final Enum<?>[] constants = (Enum<?>[]) getGetter().getReturnType().getEnumConstants(); |
| List<String> validValues = new ArrayList<>(constants.length); |
| for (Enum<?> constant : constants) |
| { |
| validValues.add(constant.name()); |
| } |
| return validValues; |
| } |
| else |
| { |
| return Arrays.asList(_annotation.validValues()); |
| } |
| } |
| |
| /** Returns true iff this attribute has valid values defined */ |
| @Override |
| public boolean hasValidValues() |
| { |
| return validValues() != null && validValues().size() > 0; |
| } |
| |
| @Override |
| public String validValuePattern() |
| { |
| return _annotation.validValuePattern(); |
| } |
| |
| |
| @Override |
| public T convert(final Object value, C object) |
| { |
| final AttributeValueConverter<T> converter = getConverter(); |
| try |
| { |
| return converter.convert(value, object); |
| } |
| catch (IllegalArgumentException iae) |
| { |
| Type returnType = getGetter().getGenericReturnType(); |
| String simpleName = returnType instanceof Class ? ((Class) returnType).getSimpleName() : returnType.toString(); |
| |
| throw new IllegalArgumentException("Cannot convert '" + |
| (isSecure() ? AbstractConfiguredObject.SECURED_STRING_VALUE : value) |
| + "' into a " + simpleName |
| + " for attribute " + getName() |
| + " (" + iae.getMessage() + ")", iae); |
| } |
| } |
| } |