com.opensymphony.xwork2.interceptor.WithLazyParams Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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
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*/
package com.opensymphony.xwork2.interceptor;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.inject.Inject;
import com.opensymphony.xwork2.ognl.OgnlUtil;
import com.opensymphony.xwork2.util.TextParseUtil;
import com.opensymphony.xwork2.util.TextParser;
import com.opensymphony.xwork2.util.ValueStack;
import com.opensymphony.xwork2.util.reflection.ReflectionProvider;
import java.util.Map;
/**
* Interceptors marked with this interface won't be fully initialised during initialisation.
* Appropriated params will be injected just before usage of the interceptor.
*
* Please be aware that in such case {@link Interceptor#init()} method must be prepared for this.
*
* @since 2.5.9
*/
public interface WithLazyParams {
class LazyParamInjector {
protected OgnlUtil ognlUtil;
protected TextParser textParser;
protected ReflectionProvider reflectionProvider;
private final TextParseUtil.ParsedValueEvaluator valueEvaluator;
public LazyParamInjector(final ValueStack valueStack) {
valueEvaluator = new TextParseUtil.ParsedValueEvaluator() {
public Object evaluate(String parsedValue) {
return valueStack.findValue(parsedValue); // no asType !!!
}
};
}
@Inject
public void setTextParser(TextParser textParser) {
this.textParser = textParser;
}
@Inject
public void setReflectionProvider(ReflectionProvider reflectionProvider) {
this.reflectionProvider = reflectionProvider;
}
@Inject
public void setOgnlUtil(OgnlUtil ognlUtil) {
this.ognlUtil = ognlUtil;
}
public Interceptor injectParams(Interceptor interceptor, Map params, ActionContext invocationContext) {
for (Map.Entry entry : params.entrySet()) {
Object paramValue = textParser.evaluate(new char[]{ '$' }, entry.getValue(), valueEvaluator, TextParser.DEFAULT_LOOP_COUNT);
ognlUtil.setProperty(entry.getKey(), paramValue, interceptor, invocationContext.getContextMap());
}
return interceptor;
}
}
}