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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ExpressionEvaluator.java | - | - | - | - |
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// Copyright 2004, 2005 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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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package org.apache.tapestry.services;
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/**
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* Wrapper around the OGNL library.
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*
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* @author Howard M. Lewis Ship
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* @since 4.0
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*/
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public interface ExpressionEvaluator |
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{ |
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/**
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* Reads a property of the target, defined by the expression.
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*
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* @throws org.apache.hivemind.ApplicationRuntimeException
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* if the expression can not be parsed, or if some other error occurs during
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* evaluation of the expression.
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*/
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public Object read(Object target, String expression);
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/**
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* Reads a property of the target, defined by the (previously compiled) expression.
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*
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* @throws org.apache.hivemind.ApplicationRuntimeException
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* if some other error occurs during evaluation of the expression.
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*/
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public Object readCompiled(Object target, Object expression);
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/**
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* Updates a property of the target, defined by the expression.
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*
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* @throws org.apache.hivemind.ApplicationRuntimeException
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* if the expression can not be parsed, or if some other error occurs during
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* evaluation of the expression.
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*/
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public void write(Object target, String expression, Object value); |
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/**
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* Updates a property of the target, defined by the (previously compiled) expression.
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*
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* @throws org.apache.hivemind.ApplicationRuntimeException
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* if some other error occurs during evaluation of the expression.
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*/
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public void writeCompiled(Object target, Object expression, Object value); |
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/**
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* Returns true if the expression evaluates to a constant or other literal value.
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*
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* @throws org.apache.hivemind.ApplicationRuntimeException
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* if the expression is not valid
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*/
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public boolean isConstant(String expression); |
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} |
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