| /******************************************************************************* |
| * 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.conditional; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.apache.ofbiz.base.util.UtilXml; |
| import org.apache.ofbiz.minilang.MiniLangElement; |
| import org.apache.ofbiz.minilang.MiniLangException; |
| import org.apache.ofbiz.minilang.MiniLangValidate; |
| import org.apache.ofbiz.minilang.SimpleMethod; |
| import org.apache.ofbiz.minilang.method.MethodContext; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Implements the <and>, <or>, <not>, and <xor> elements. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini-language+Reference#Mini-languageReference-Conditional%2FLoopingStatements">Mini-language Reference</a> |
| */ |
| public abstract class CombinedCondition extends MiniLangElement implements Conditional { |
| |
| protected final List<Conditional> subConditions; |
| |
| public CombinedCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| List<? extends Element> childElements = UtilXml.childElementList(element); |
| if (MiniLangValidate.validationOn() && childElements.isEmpty()) { |
| MiniLangValidate.handleError("No conditional elements.", simpleMethod, element); |
| } |
| List<Conditional> conditionalList = new ArrayList<Conditional>(childElements.size()); |
| for (Element conditionalElement : UtilXml.childElementList(element)) { |
| conditionalList.add(ConditionalFactory.makeConditional(conditionalElement, simpleMethod)); |
| } |
| this.subConditions = Collections.unmodifiableList(conditionalList); |
| } |
| |
| protected void prettyPrint(StringBuilder messageBuffer, MethodContext methodContext, String combineText) { |
| messageBuffer.append("("); |
| for (Conditional subCond : subConditions) { |
| subCond.prettyPrint(messageBuffer, methodContext); |
| messageBuffer.append(combineText); |
| } |
| messageBuffer.append(")"); |
| } |
| |
| /** |
| * A <and> element factory. |
| */ |
| public static final class AndConditionFactory extends ConditionalFactory<CombinedCondition> { |
| @Override |
| public CombinedCondition createCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new CombinedCondition(element, simpleMethod) { |
| @Override |
| public boolean checkCondition(MethodContext methodContext) throws MiniLangException { |
| if (subConditions.size() == 0) |
| return true; |
| for (Conditional subCond : subConditions) { |
| if (!subCond.checkCondition(methodContext)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| @Override |
| public void prettyPrint(StringBuilder messageBuffer, MethodContext methodContext) { |
| prettyPrint(messageBuffer, methodContext, " AND "); |
| } |
| }; |
| } |
| |
| @Override |
| public String getName() { |
| return "and"; |
| } |
| } |
| |
| /** |
| * A <not> element factory. |
| */ |
| public static final class NotConditionFactory extends ConditionalFactory<CombinedCondition> { |
| @Override |
| public CombinedCondition createCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new CombinedCondition(element, simpleMethod) { |
| @Override |
| public boolean checkCondition(MethodContext methodContext) throws MiniLangException { |
| if (subConditions.size() == 0) |
| return true; |
| Conditional subCond = subConditions.get(0); |
| return !subCond.checkCondition(methodContext); |
| } |
| @Override |
| public void prettyPrint(StringBuilder messageBuffer, MethodContext methodContext) { |
| messageBuffer.append("( NOT "); |
| if (subConditions.size() > 0) { |
| Conditional subCond = subConditions.get(0); |
| subCond.prettyPrint(messageBuffer, methodContext); |
| } |
| messageBuffer.append(")"); |
| } |
| }; |
| } |
| |
| @Override |
| public String getName() { |
| return "not"; |
| } |
| } |
| |
| /** |
| * A <or> element factory. |
| */ |
| public static final class OrConditionFactory extends ConditionalFactory<CombinedCondition> { |
| @Override |
| public CombinedCondition createCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new CombinedCondition(element, simpleMethod) { |
| @Override |
| public boolean checkCondition(MethodContext methodContext) throws MiniLangException { |
| if (subConditions.size() == 0) |
| return true; |
| for (Conditional subCond : subConditions) { |
| if (subCond.checkCondition(methodContext)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| @Override |
| public void prettyPrint(StringBuilder messageBuffer, MethodContext methodContext) { |
| prettyPrint(messageBuffer, methodContext, " OR "); |
| } |
| }; |
| } |
| |
| @Override |
| public String getName() { |
| return "or"; |
| } |
| } |
| |
| /** |
| * A <xor> element factory. |
| */ |
| public static final class XorConditionFactory extends ConditionalFactory<CombinedCondition> { |
| @Override |
| public CombinedCondition createCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new CombinedCondition(element, simpleMethod) { |
| @Override |
| public boolean checkCondition(MethodContext methodContext) throws MiniLangException { |
| if (subConditions.size() == 0) |
| return true; |
| boolean trueFound = false; |
| for (Conditional subCond : subConditions) { |
| if (subCond.checkCondition(methodContext)) { |
| if (trueFound) { |
| return false; |
| } else { |
| trueFound = true; |
| } |
| } |
| } |
| return trueFound; |
| } |
| @Override |
| public void prettyPrint(StringBuilder messageBuffer, MethodContext methodContext) { |
| prettyPrint(messageBuffer, methodContext, " XOR "); |
| } |
| }; |
| } |
| |
| @Override |
| public String getName() { |
| return "xor"; |
| } |
| } |
| } |