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Tomcat example source code file (ELContextImpl.java)
The Tomcat ELContextImpl.java source code/* * 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.jasper.el; import java.lang.reflect.Method; import java.util.HashMap; import java.util.Map; import javax.el.ELContext; import javax.el.ELResolver; import javax.el.FunctionMapper; import javax.el.ValueExpression; import javax.el.VariableMapper; /** * Implementation of ELContext * * @author Jacob Hookom */ public final class ELContextImpl extends ELContext { private final static FunctionMapper NullFunctionMapper = new FunctionMapper() { public Method resolveFunction(String prefix, String localName) { return null; } }; private final static class VariableMapperImpl extends VariableMapper { private Map<String, ValueExpression> vars; public ValueExpression resolveVariable(String variable) { if (vars == null) { return null; } return vars.get(variable); } public ValueExpression setVariable(String variable, ValueExpression expression) { if (vars == null) vars = new HashMap<String, ValueExpression>(); return vars.put(variable, expression); } } private final ELResolver resolver; private FunctionMapper functionMapper = NullFunctionMapper; // immutable private VariableMapper variableMapper; public ELContextImpl() { this(ELResolverImpl.DefaultResolver); } public ELContextImpl(ELResolver resolver) { this.resolver = resolver; } public ELResolver getELResolver() { return this.resolver; } public FunctionMapper getFunctionMapper() { return this.functionMapper; } public VariableMapper getVariableMapper() { if (this.variableMapper == null) { this.variableMapper = new VariableMapperImpl(); } return this.variableMapper; } public void setFunctionMapper(FunctionMapper functionMapper) { this.functionMapper = functionMapper; } public void setVariableMapper(VariableMapper variableMapper) { this.variableMapper = variableMapper; } } Other Tomcat examples (source code examples)Here is a short list of links related to this Tomcat ELContextImpl.java source code file: |
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