| /******************************************************************************* |
| * 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.ofbiz.minilang.method.ifops; |
| |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.ofbiz.base.util.ObjectType; |
| import org.apache.ofbiz.base.util.UtilXml; |
| import org.apache.ofbiz.base.util.collections.FlexibleMapAccessor; |
| import org.apache.ofbiz.minilang.MiniLangException; |
| import org.apache.ofbiz.minilang.MiniLangRuntimeException; |
| import org.apache.ofbiz.minilang.MiniLangValidate; |
| import org.apache.ofbiz.minilang.SimpleMethod; |
| import org.apache.ofbiz.minilang.artifact.ArtifactInfoContext; |
| import org.apache.ofbiz.minilang.method.MethodContext; |
| import org.apache.ofbiz.minilang.method.MethodOperation; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Implements the <if-instance-of> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini-language+Reference#Mini-languageReference-{{%3Cifinstanceof%3E}}">Mini-language Reference</a> |
| */ |
| public final class IfInstanceOf extends MethodOperation { |
| |
| private final String className; |
| private final Class<?> compareClass; |
| private final List<MethodOperation> elseSubOps; |
| private final FlexibleMapAccessor<Object> fieldFma; |
| private final List<MethodOperation> subOps; |
| |
| public IfInstanceOf(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.attributeNames(simpleMethod, element, "field", "class"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "field", "class"); |
| MiniLangValidate.constantAttributes(simpleMethod, element, "class"); |
| MiniLangValidate.expressionAttributes(simpleMethod, element, "field"); |
| } |
| this.fieldFma = FlexibleMapAccessor.getInstance(element.getAttribute("field")); |
| this.className = element.getAttribute("class"); |
| Class<?> compareClass = null; |
| if (!className.isEmpty()) { |
| try { |
| compareClass = ObjectType.loadClass(className); |
| } catch (ClassNotFoundException e) { |
| MiniLangValidate.handleError("Invalid class name " + className, simpleMethod, element); |
| } |
| } |
| this.compareClass = compareClass; |
| this.subOps = Collections.unmodifiableList(SimpleMethod.readOperations(element, simpleMethod)); |
| Element elseElement = UtilXml.firstChildElement(element, "else"); |
| if (elseElement != null) { |
| this.elseSubOps = Collections.unmodifiableList(SimpleMethod.readOperations(elseElement, simpleMethod)); |
| } else { |
| this.elseSubOps = null; |
| } |
| } |
| |
| @Override |
| public boolean exec(MethodContext methodContext) throws MiniLangException { |
| if (this.compareClass == null) { |
| throw new MiniLangRuntimeException("Invalid class name " + className, this); |
| } |
| boolean runSubOps = false; |
| Object fieldVal = fieldFma.get(methodContext.getEnvMap()); |
| if (fieldVal != null) { |
| runSubOps = ObjectType.instanceOf(fieldVal.getClass(), compareClass); |
| } |
| if (runSubOps) { |
| return SimpleMethod.runSubOps(subOps, methodContext); |
| } else { |
| if (elseSubOps != null) { |
| return SimpleMethod.runSubOps(elseSubOps, methodContext); |
| } else { |
| return true; |
| } |
| } |
| } |
| |
| @Override |
| public void gatherArtifactInfo(ArtifactInfoContext aic) { |
| for (MethodOperation method : this.subOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| if (this.elseSubOps != null) { |
| for (MethodOperation method : this.elseSubOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder("<if-instance-of "); |
| sb.append("field=\"").append(this.fieldFma).append("\" "); |
| if (compareClass != null) { |
| sb.append("class=\"").append(compareClass.getName()).append("\" "); |
| } |
| sb.append("/>"); |
| return sb.toString(); |
| } |
| |
| /** |
| * A <if-instance-of> element factory. |
| */ |
| public static final class IfInstanceOfFactory implements Factory<IfInstanceOf> { |
| @Override |
| public IfInstanceOf createMethodOperation(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new IfInstanceOf(element, simpleMethod); |
| } |
| |
| @Override |
| public String getName() { |
| return "if-instance-of"; |
| } |
| } |
| } |