113 lines
3.4 KiB
Java
113 lines
3.4 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.el;
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import java.io.Externalizable;
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import java.io.IOException;
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import java.io.ObjectInput;
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import java.io.ObjectOutput;
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import javax.el.ELContext;
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import javax.el.ELException;
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import javax.el.MethodExpression;
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import javax.el.MethodInfo;
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import org.apache.el.util.ReflectionUtil;
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public class MethodExpressionLiteral extends MethodExpression implements Externalizable {
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private Class<?> expectedType;
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private String expr;
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private Class<?>[] paramTypes;
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public MethodExpressionLiteral() {
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// do nothing
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}
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public MethodExpressionLiteral(String expr, Class<?> expectedType,
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Class<?>[] paramTypes) {
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this.expr = expr;
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this.expectedType = expectedType;
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this.paramTypes = paramTypes;
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}
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@Override
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public MethodInfo getMethodInfo(ELContext context) throws ELException {
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context.notifyBeforeEvaluation(getExpressionString());
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MethodInfo result =
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new MethodInfo(this.expr, this.expectedType, this.paramTypes);
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context.notifyAfterEvaluation(getExpressionString());
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return result;
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}
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@Override
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public Object invoke(ELContext context, Object[] params) throws ELException {
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context.notifyBeforeEvaluation(getExpressionString());
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Object result;
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if (this.expectedType != null) {
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result = context.convertToType(this.expr, this.expectedType);
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} else {
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result = this.expr;
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}
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context.notifyAfterEvaluation(getExpressionString());
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return result;
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}
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@Override
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public String getExpressionString() {
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return this.expr;
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}
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@Override
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public boolean equals(Object obj) {
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return (obj instanceof MethodExpressionLiteral && this.hashCode() == obj.hashCode());
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}
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@Override
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public int hashCode() {
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return this.expr.hashCode();
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}
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@Override
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public boolean isLiteralText() {
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return true;
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}
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@Override
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public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
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this.expr = in.readUTF();
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String type = in.readUTF();
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if (!"".equals(type)) {
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this.expectedType = ReflectionUtil.forName(type);
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}
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this.paramTypes = ReflectionUtil.toTypeArray(((String[]) in
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.readObject()));
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}
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@Override
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public void writeExternal(ObjectOutput out) throws IOException {
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out.writeUTF(this.expr);
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out.writeUTF((this.expectedType != null) ? this.expectedType.getName()
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: "");
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out.writeObject(ReflectionUtil.toTypeNameArray(this.paramTypes));
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}
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}
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