| /******************************************************************************* |
| * 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.entityops; |
| |
| import org.apache.ofbiz.base.util.Debug; |
| import org.apache.ofbiz.base.util.collections.FlexibleMapAccessor; |
| import org.apache.ofbiz.base.util.string.FlexibleStringExpander; |
| import org.apache.ofbiz.entity.GenericEntityException; |
| import org.apache.ofbiz.entity.GenericValue; |
| 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 <get-related-one> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini-language+Reference#Mini-languageReference-{{%3Cgetrelatedone%3E}}">Mini-language Reference</a> |
| */ |
| public final class GetRelatedOne extends MethodOperation { |
| |
| public static final String module = GetRelatedOne.class.getName(); |
| |
| private final FlexibleStringExpander relationNameFse; |
| private final FlexibleMapAccessor<GenericValue> toValueFma; |
| private final FlexibleStringExpander useCacheFse; |
| private final FlexibleMapAccessor<GenericValue> valueFma; |
| |
| public GetRelatedOne(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.attributeNames(simpleMethod, element, "value-field", "relation-name", "to-value-field", "use-cache"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "value-field", "relation-name", "to-value-field"); |
| MiniLangValidate.expressionAttributes(simpleMethod, element, "value-field", "to-value-field"); |
| MiniLangValidate.noChildElements(simpleMethod, element); |
| } |
| valueFma = FlexibleMapAccessor.getInstance(element.getAttribute("value-field")); |
| relationNameFse = FlexibleStringExpander.getInstance(element.getAttribute("relation-name")); |
| toValueFma = FlexibleMapAccessor.getInstance(element.getAttribute("to-value-field")); |
| useCacheFse = FlexibleStringExpander.getInstance(element.getAttribute("use-cache")); |
| } |
| |
| @Override |
| public boolean exec(MethodContext methodContext) throws MiniLangException { |
| GenericValue value = valueFma.get(methodContext.getEnvMap()); |
| if (value == null) { |
| throw new MiniLangRuntimeException("Entity value not found with name: " + valueFma, this); |
| } |
| String relationName = relationNameFse.expandString(methodContext.getEnvMap()); |
| boolean useCache = "true".equals(useCacheFse.expandString(methodContext.getEnvMap())); |
| try { |
| toValueFma.put(methodContext.getEnvMap(), value.getRelatedOne(relationName, useCache)); |
| } catch (GenericEntityException e) { |
| String errMsg = "Exception thrown while finding related value: " + e.getMessage(); |
| Debug.logWarning(e, errMsg, module); |
| simpleMethod.addErrorMessage(methodContext, errMsg); |
| return false; |
| } |
| return true; |
| } |
| |
| @Override |
| public void gatherArtifactInfo(ArtifactInfoContext aic) { |
| aic.addEntityName(relationNameFse.toString()); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder("<get-related-one "); |
| sb.append("value-field=\"").append(this.valueFma).append("\" "); |
| sb.append("relation-name=\"").append(this.relationNameFse).append("\" "); |
| sb.append("to-value-field=\"").append(this.toValueFma).append("\" "); |
| if (!useCacheFse.isEmpty()) { |
| sb.append("use-cache=\"").append(this.useCacheFse).append("\" "); |
| } |
| sb.append("/>"); |
| return sb.toString(); |
| } |
| |
| /** |
| * A factory for the <get-related-one> element. |
| */ |
| public static final class GetRelatedOneFactory implements Factory<GetRelatedOne> { |
| @Override |
| public GetRelatedOne createMethodOperation(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new GetRelatedOne(element, simpleMethod); |
| } |
| |
| @Override |
| public String getName() { |
| return "get-related-one"; |
| } |
| } |
| } |