| /******************************************************************************* |
| * 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.ofbiz.minilang.method.conditional; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.ofbiz.base.util.UtilXml; |
| import org.ofbiz.minilang.MiniLangException; |
| import org.ofbiz.minilang.MiniLangValidate; |
| import org.ofbiz.minilang.SimpleMethod; |
| import org.ofbiz.minilang.artifact.ArtifactInfoContext; |
| import org.ofbiz.minilang.method.MethodContext; |
| import org.ofbiz.minilang.method.MethodOperation; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Implements the <if> element. |
| */ |
| public final class MasterIf extends MethodOperation { |
| |
| private final Conditional condition; |
| private final List<ElseIf> elseIfs; |
| private final List<MethodOperation> elseSubOps; |
| private final List<MethodOperation> thenSubOps; |
| |
| public MasterIf(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.childElements(simpleMethod, element, "condition", "then", "else-if", "else"); |
| MiniLangValidate.requiredChildElements(simpleMethod, element, "condition", "then"); |
| } |
| Element conditionElement = UtilXml.firstChildElement(element, "condition"); |
| Element conditionChildElement = UtilXml.firstChildElement(conditionElement); |
| this.condition = ConditionalFactory.makeConditional(conditionChildElement, simpleMethod); |
| Element thenElement = UtilXml.firstChildElement(element, "then"); |
| this.thenSubOps = Collections.unmodifiableList(SimpleMethod.readOperations(thenElement, simpleMethod)); |
| List<? extends Element> elseIfElements = UtilXml.childElementList(element, "else-if"); |
| if (elseIfElements.isEmpty()) { |
| this.elseIfs = null; |
| } else { |
| List<ElseIf> elseIfs = new ArrayList<ElseIf>(elseIfElements.size()); |
| for (Element elseIfElement : elseIfElements) { |
| elseIfs.add(new ElseIf(elseIfElement, simpleMethod)); |
| } |
| this.elseIfs = Collections.unmodifiableList(elseIfs); |
| } |
| Element elseElement = UtilXml.firstChildElement(element, "else"); |
| if (elseElement == null) { |
| this.elseSubOps = null; |
| } else { |
| this.elseSubOps = Collections.unmodifiableList(SimpleMethod.readOperations(elseElement, simpleMethod)); |
| } |
| } |
| |
| @Override |
| public boolean exec(MethodContext methodContext) throws MiniLangException { |
| // if conditions fails, always return true; if a sub-op returns false |
| // return false and stop, otherwise return true |
| // return true; |
| // only run subOps if element is empty/null |
| boolean runSubOps = condition.checkCondition(methodContext); |
| if (runSubOps) { |
| return SimpleMethod.runSubOps(thenSubOps, methodContext); |
| } else { |
| // try the else-ifs |
| if (elseIfs != null) { |
| for (ElseIf elseIf : elseIfs) { |
| if (elseIf.checkCondition(methodContext)) { |
| return elseIf.runSubOps(methodContext); |
| } |
| } |
| } |
| if (elseSubOps != null) { |
| return SimpleMethod.runSubOps(elseSubOps, methodContext); |
| } else { |
| return true; |
| } |
| } |
| } |
| |
| @Override |
| public void gatherArtifactInfo(ArtifactInfoContext aic) { |
| for (MethodOperation method : this.thenSubOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| if (this.elseSubOps != null) { |
| for (MethodOperation method : this.elseSubOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| } |
| if (this.elseIfs != null) { |
| for (ElseIf elseIf : elseIfs) { |
| elseIf.gatherArtifactInfo(aic); |
| } |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder messageBuf = new StringBuilder(); |
| this.condition.prettyPrint(messageBuf, null); |
| return "<if><condition>" + messageBuf + "</condition></if>"; |
| } |
| |
| /** |
| * A <if> element factory. |
| */ |
| public static final class MasterIfFactory implements Factory<MasterIf> { |
| public MasterIf createMethodOperation(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new MasterIf(element, simpleMethod); |
| } |
| |
| public String getName() { |
| return "if"; |
| } |
| } |
| } |