| /******************************************************************************* |
| * 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.envops; |
| |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.ofbiz.base.util.Debug; |
| 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.apache.ofbiz.minilang.method.envops.Break.BreakElementException; |
| import org.apache.ofbiz.minilang.method.envops.Continue.ContinueElementException; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Implements the <iterate-map> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini+Language+-+minilang+-+simple-method+-+Reference">Mini-language Referenc</a> |
| */ |
| public final class IterateMap extends MethodOperation { |
| |
| public static final String module = IterateMap.class.getName(); |
| |
| private final FlexibleMapAccessor<Object> keyFma; |
| private final FlexibleMapAccessor<Map<? extends Object, ? extends Object>> mapFma; |
| private final List<MethodOperation> subOps; |
| private final FlexibleMapAccessor<Object> valueFma; |
| |
| public IterateMap(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.attributeNames(simpleMethod, element, "key", "map", "value"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "key", "map", "value"); |
| MiniLangValidate.expressionAttributes(simpleMethod, element, "key", "map", "value"); |
| } |
| this.keyFma = FlexibleMapAccessor.getInstance(element.getAttribute("key")); |
| this.mapFma = FlexibleMapAccessor.getInstance(element.getAttribute("map")); |
| this.valueFma = FlexibleMapAccessor.getInstance(element.getAttribute("value")); |
| this.subOps = Collections.unmodifiableList(SimpleMethod.readOperations(element, simpleMethod)); |
| } |
| |
| @Override |
| public boolean exec(MethodContext methodContext) throws MiniLangException { |
| if (mapFma.isEmpty()) { |
| throw new MiniLangRuntimeException("No map specified.", this); |
| } |
| Object oldKey = keyFma.get(methodContext.getEnvMap()); |
| Object oldValue = valueFma.get(methodContext.getEnvMap()); |
| if (oldKey != null) { |
| if (Debug.verboseOn()) |
| Debug.logVerbose("In iterate-map the key had a non-null value before entering the loop for the operation: " + this, module); |
| } |
| if (oldValue != null) { |
| if (Debug.verboseOn()) |
| Debug.logVerbose("In iterate-map the value had a non-null value before entering the loop for the operation: " + this, module); |
| } |
| Map<? extends Object, ? extends Object> theMap = mapFma.get(methodContext.getEnvMap()); |
| if (theMap == null) { |
| if (Debug.verboseOn()) |
| Debug.logVerbose("Map not found with name " + mapFma + ", doing nothing: " + this, module); |
| return true; |
| } |
| if (theMap.size() == 0) { |
| if (Debug.verboseOn()) |
| Debug.logVerbose("Map with name " + mapFma + " has zero entries, doing nothing: " + this, module); |
| return true; |
| } |
| for (Map.Entry<? extends Object, ? extends Object> theEntry : theMap.entrySet()) { |
| keyFma.put(methodContext.getEnvMap(), theEntry.getKey()); |
| valueFma.put(methodContext.getEnvMap(), theEntry.getValue()); |
| try { |
| for (MethodOperation methodOperation : subOps) { |
| if (!methodOperation.exec(methodContext)) { |
| return false; |
| } |
| } |
| } catch (MiniLangException e) { |
| if (e instanceof BreakElementException) { |
| break; |
| } |
| if (e instanceof ContinueElementException) { |
| continue; |
| } |
| throw e; |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public void gatherArtifactInfo(ArtifactInfoContext aic) { |
| for (MethodOperation method : this.subOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder("<iterate-map "); |
| if (!this.mapFma.isEmpty()) { |
| sb.append("map=\"").append(this.mapFma).append("\" "); |
| } |
| if (!this.keyFma.isEmpty()) { |
| sb.append("key=\"").append(this.keyFma).append("\" "); |
| } |
| if (!this.valueFma.isEmpty()) { |
| sb.append("value=\"").append(this.valueFma).append("\" "); |
| } |
| sb.append("/>"); |
| return sb.toString(); |
| } |
| |
| /** |
| * A factory for the <iterate-map> element. |
| */ |
| public static final class IterateMapFactory implements Factory<IterateMap> { |
| @Override |
| public IterateMap createMethodOperation(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new IterateMap(element, simpleMethod); |
| } |
| |
| @Override |
| public String getName() { |
| return "iterate-map"; |
| } |
| } |
| } |