com.sun.faces.el.ELContextImpl Maven / Gradle / Ivy
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package com.sun.faces.el;
import javax.el.ELContext;
import javax.el.ELResolver;
import javax.el.FunctionMapper;
import javax.el.ValueExpression;
import javax.el.VariableMapper;
import java.util.Map;
import java.util.HashMap;
import java.lang.reflect.Method;
/**
* Concrete implementation of {@link javax.el.ELContext}.
* ELContext's constructor is protected to control creation of ELContext
* objects through their appropriate factory methods. This version of
* ELContext forces construction through FacesContextImpl.
*
*/
public class ELContextImpl extends ELContext {
private FunctionMapper functionMapper = new NoopFunctionMapper();
private VariableMapper variableMapper;
private ELResolver resolver;
// ------------------------------------------------------------ Constructors
/**
* Constructs a new ELContext associated with the given ELResolver.
* @param resolver the ELResolver to return from {@link #getELResolver()}
*/
public ELContextImpl(ELResolver resolver) {
this.resolver = resolver;
}
// -------------------------------------------------- Methods from ELContext
public FunctionMapper getFunctionMapper() {
return functionMapper;
}
public VariableMapper getVariableMapper() {
if (variableMapper == null) {
variableMapper = new VariableMapperImpl();
}
return variableMapper;
}
public ELResolver getELResolver() {
return resolver;
}
// ---------------------------------------------------------- Public Methods
public void setFunctionMapper(FunctionMapper functionMapper) {
this.functionMapper = functionMapper;
}
// ----------------------------------------------------------- Inner Classes
private static class VariableMapperImpl extends VariableMapper {
private Map variables;
public VariableMapperImpl() {
//noinspection CollectionWithoutInitialCapacity
variables = new HashMap();
}
public ValueExpression resolveVariable(String s) {
return variables.get(s);
}
public ValueExpression setVariable(String s, ValueExpression valueExpression) {
return (variables.put(s, valueExpression));
}
}
private static class NoopFunctionMapper extends FunctionMapper {
public Method resolveFunction(String s, String s1) {
return null;
}
}
}