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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.madvoc.config;
import jodd.bean.BeanUtil;
import jodd.introspector.MapperFunction;
import jodd.madvoc.MadvocException;
import jodd.typeconverter.TypeConverterManager;
import jodd.util.ClassUtil;
import java.util.function.Function;
/**
* Wrapper of a target for IN/OUT operations. It wraps one of these:
*
* - action object
* - method parameter
* - third-party object
*
*
* Target provides a common interface to write or read certain property from a wrapped value.
*/
public class Target {
private static final Function VALUE_INSTANCE_CREATOR = type -> {
try {
return ClassUtil.newInstance(type);
} catch (Exception ex) {
throw new MadvocException(ex);
}
};
/**
* Creates a common target over a value, with known scope data.
*/
public static Target ofValue(final Object value, final ScopeData scopeData) {
return new Target(value, null, scopeData, null, VALUE_INSTANCE_CREATOR);
}
/**
* Creates a common target over a method param.
*/
public static Target ofMethodParam(final MethodParam methodParam, final Object object) {
return new Target(object, methodParam.type(), methodParam.scopeData(), methodParam.mapperFunction(), VALUE_INSTANCE_CREATOR);
}
/**
* Creates a common target over a method param.
*/
public static Target ofMethodParam(final MethodParam methodParam, final Function valueInstanceCreator) {
return new Target(null, methodParam.type(), methodParam.scopeData(), methodParam.mapperFunction(), valueInstanceCreator);
}
private final Class type;
private final ScopeData scopeData;
private Object value;
private final Function valueInstanceCreator;
private final MapperFunction mapperFunction;
private Target(final Object value, final Class type, final ScopeData scopeData, final MapperFunction mapperFunction, final Function valueInstanceCreator) {
this.value = value;
this.type = type;
this.scopeData = scopeData;
this.valueInstanceCreator = valueInstanceCreator;
this.mapperFunction = mapperFunction;
}
/**
* Returns targets type, if specified.
* @see #resolveType()
*/
public Class type() {
return type;
}
/**
* Resolves target type: either using {@link #type() provided type}
* or type of the {@link #value() value}.
*/
public Class resolveType() {
if (type != null) {
return type;
}
return value.getClass();
}
/**
* Returns target value, if specified.
*/
public Object value() {
return value;
}
/**
* Returns associated scope data.
*/
public ScopeData scopeData() {
return scopeData;
}
// ---------------------------------------------------------------- read
/**
* Reads value from the target. If something goes wrong, exception
* is thrown. We assume that outjection is controlled by developer
* and that each reading of a value must be a successful operation.
*/
public Object readValue(final InjectionPoint injectionPoint) {
return readValue(injectionPoint.targetName());
}
public Object readValue(final String name) {
String propertyName = name;
if (type != null) {
final int dotNdx = propertyName.indexOf('.');
if (dotNdx == -1) {
return value;
}
propertyName = propertyName.substring(dotNdx + 1);
}
return BeanUtil.declared.getProperty(value, propertyName);
}
// ---------------------------------------------------------------- write
/**
* Writes value to this target. Depending on a flag, writing the value can be
* completely silent, when no exception is thrown and with top performances.
* Otherwise, an exception is thrown on a failure.
*/
public void writeValue(final InjectionPoint injectionPoint, final Object propertyValue, final boolean silent) {
writeValue(injectionPoint.targetName(), propertyValue, silent);
}
public void writeValue(final String name, final Object propertyValue, final boolean silent) {
String propertyName = name;
if (type != null) {
// target type specified, save into target value!
int dotNdx = propertyName.indexOf('.');
if (dotNdx == -1) {
if (mapperFunction != null) {
value = mapperFunction.apply(propertyValue);
}
else {
value = TypeConverterManager.get().convertType(propertyValue, type);
}
return;
}
if (value == null) {
value = valueInstanceCreator.apply(type);
}
propertyName = propertyName.substring(dotNdx + 1);
}
// inject into target value
if (silent) {
BeanUtil.declaredForcedSilent.setProperty(value, propertyName, propertyValue);
}
else {
BeanUtil.declaredForced.setProperty(value, propertyName, propertyValue);
}
}
}