| /******************************************************************************* |
| * 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.Collections; |
| import java.util.List; |
| |
| import org.apache.oro.text.regex.MalformedPatternException; |
| import org.apache.oro.text.regex.Pattern; |
| import org.apache.oro.text.regex.PatternMatcher; |
| import org.apache.oro.text.regex.Perl5Matcher; |
| import org.apache.ofbiz.base.util.Debug; |
| import org.apache.ofbiz.base.util.PatternFactory; |
| import org.apache.ofbiz.base.util.UtilXml; |
| import org.apache.ofbiz.base.util.collections.FlexibleMapAccessor; |
| import org.apache.ofbiz.base.util.string.FlexibleStringExpander; |
| import org.apache.ofbiz.minilang.MiniLangException; |
| import org.apache.ofbiz.minilang.MiniLangRuntimeException; |
| import org.apache.ofbiz.minilang.MiniLangUtil; |
| 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-regexp> element. |
| * |
| * @see <a href="https://cwiki.apache.org/confluence/display/OFBADMIN/Mini+Language+-+minilang+-+simple-method+-+Reference">Mini-language Reference</a> |
| */ |
| public class RegexpCondition extends MethodOperation implements Conditional { |
| |
| public static final String module = RegexpCondition.class.getName(); |
| |
| private final FlexibleMapAccessor<Object> fieldFma; |
| private final FlexibleStringExpander exprFse; |
| // Sub-operations are used only when this is a method operation. |
| private final List<MethodOperation> elseSubOps; |
| private final List<MethodOperation> subOps; |
| |
| public RegexpCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| super(element, simpleMethod); |
| if (MiniLangValidate.validationOn()) { |
| MiniLangValidate.attributeNames(simpleMethod, element, "field", "expr"); |
| MiniLangValidate.requiredAttributes(simpleMethod, element, "field", "expr"); |
| MiniLangValidate.expressionAttributes(simpleMethod, element, "field"); |
| } |
| this.fieldFma = FlexibleMapAccessor.getInstance(element.getAttribute("field")); |
| this.exprFse = FlexibleStringExpander.getInstance(element.getAttribute("expr")); |
| Element childElement = UtilXml.firstChildElement(element); |
| if (childElement != null && !"else".equals(childElement.getTagName())) { |
| this.subOps = Collections.unmodifiableList(SimpleMethod.readOperations(element, simpleMethod)); |
| } else { |
| this.subOps = null; |
| } |
| Element elseElement = UtilXml.firstChildElement(element, "else"); |
| if (elseElement != null) { |
| this.elseSubOps = Collections.unmodifiableList(SimpleMethod.readOperations(elseElement, simpleMethod)); |
| } else { |
| this.elseSubOps = null; |
| } |
| } |
| |
| @Override |
| public boolean checkCondition(MethodContext methodContext) throws MiniLangException { |
| Object fieldVal = fieldFma.get(methodContext.getEnvMap()); |
| if (fieldVal == null) { |
| fieldVal = ""; |
| } else if (!(fieldVal instanceof String)) { |
| try { |
| fieldVal = MiniLangUtil.convertType(fieldVal, String.class, methodContext.getLocale(), methodContext.getTimeZone(), null); |
| } catch (Exception e) { |
| throw new MiniLangRuntimeException(e, this); |
| } |
| } |
| String regExp = exprFse.expandString(methodContext.getEnvMap()); |
| Pattern pattern = null; |
| |
| try { |
| pattern = PatternFactory.createOrGetPerl5CompiledPattern(regExp, true); |
| } catch (MalformedPatternException e) { |
| Debug.logError(e, "Regular Expression [" + regExp + "] is mal-formed: " + e.toString(), module); |
| throw new MiniLangRuntimeException(e, this); |
| } |
| |
| PatternMatcher matcher = new Perl5Matcher(); |
| if (matcher.matches((String) fieldVal, pattern)) { |
| //Debug.logInfo("The string [" + fieldVal + "] matched the pattern expr [" + pattern.getPattern() + "]", module); |
| return true; |
| } else { |
| //Debug.logInfo("The string [" + fieldVal + "] did NOT match the pattern expr [" + pattern.getPattern() + "]", module); |
| return false; |
| } |
| } |
| |
| @Override |
| public boolean exec(MethodContext methodContext) throws MiniLangException { |
| if (checkCondition(methodContext)) { |
| if (this.subOps != null) { |
| return SimpleMethod.runSubOps(subOps, methodContext); |
| } |
| } else { |
| if (elseSubOps != null) { |
| return SimpleMethod.runSubOps(elseSubOps, methodContext); |
| } |
| } |
| return true; |
| } |
| |
| @Override |
| public void gatherArtifactInfo(ArtifactInfoContext aic) { |
| if (this.subOps != null) { |
| for (MethodOperation method : this.subOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| } |
| if (this.elseSubOps != null) { |
| for (MethodOperation method : this.elseSubOps) { |
| method.gatherArtifactInfo(aic); |
| } |
| } |
| } |
| |
| @Override |
| public void prettyPrint(StringBuilder messageBuffer, MethodContext methodContext) { |
| messageBuffer.append("regexp["); |
| messageBuffer.append("["); |
| messageBuffer.append(this.fieldFma); |
| messageBuffer.append("="); |
| messageBuffer.append(fieldFma.get(methodContext.getEnvMap())); |
| messageBuffer.append("] matches "); |
| messageBuffer.append(exprFse.expandString(methodContext.getEnvMap())); |
| messageBuffer.append("]"); |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder sb = new StringBuilder("<if-regexp "); |
| sb.append("field=\"").append(this.fieldFma).append("\" "); |
| if (!this.exprFse.isEmpty()) { |
| sb.append("expr=\"").append(this.exprFse).append("\" "); |
| } |
| sb.append("/>"); |
| return sb.toString(); |
| } |
| |
| /** |
| * A <if-regexp> element factory. |
| */ |
| public static final class RegexpConditionFactory extends ConditionalFactory<RegexpCondition> implements Factory<RegexpCondition> { |
| @Override |
| public RegexpCondition createCondition(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new RegexpCondition(element, simpleMethod); |
| } |
| |
| @Override |
| public RegexpCondition createMethodOperation(Element element, SimpleMethod simpleMethod) throws MiniLangException { |
| return new RegexpCondition(element, simpleMethod); |
| } |
| |
| @Override |
| public String getName() { |
| return "if-regexp"; |
| } |
| } |
| } |