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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.injector;
import jodd.bean.BeanUtil;
import jodd.madvoc.MadvocException;
import jodd.typeconverter.TypeConverterManager;
import java.lang.reflect.Constructor;
/**
* Injection target.
*/
public class Target {
protected final Class type;
protected Object value;
/**
* Creates target over the value. Injection will be done into the value,
* hence the name and the types are irrelevant. Used for action itself
* and action non-annotated arguments.
*/
public Target(Object value) {
this.value = value;
this.type = null;
}
public Target(Object value, Class type) {
this.value = value;
this.type = type;
}
/**
* Creates target over a type with given name. Injection is actually a type conversion
* from input content to the given type. Used for annotated arguments.
*/
public Target(Class type) {
this.type = type;
this.value = null;
}
/**
* Returns targets type, if specified.
* @see #resolveType()
*/
public Class getType() {
return type;
}
/**
* Resolves target type: either using {@link #getType() provided type}
* or type of the {@link #getValue() value}.
*/
public Class resolveType() {
if (type != null) {
return type;
}
return value.getClass();
}
/**
* Returns target value, if specified.
*/
public Object getValue() {
return value;
}
/**
* Sets target value.
*/
public void setValue(Object value) {
this.value = value;
}
// ---------------------------------------------------------------- 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 successful operation.
*/
public Object readValue(String propertyName) {
if (type != null) {
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, setting 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(String propertyName, Object propertyValue, boolean silent) {
if (type != null) {
// target type specified, save into target value!
int dotNdx = propertyName.indexOf('.');
if (dotNdx == -1) {
value = TypeConverterManager.convertType(propertyValue, type);
return;
}
if (value == null) {
createValueInstance();
}
propertyName = propertyName.substring(dotNdx + 1);
}
// inject into target value
if (silent) {
BeanUtil.declaredForcedSilent.setProperty(value, propertyName, propertyValue);
return;
}
BeanUtil.declaredForced.setProperty(value, propertyName, propertyValue);
}
/**
* Creates new instance of a type and stores it in the value.
*/
@SuppressWarnings({"unchecked", "NullArgumentToVariableArgMethod"})
protected void createValueInstance() {
try {
Constructor ctor = type.getDeclaredConstructor(null);
ctor.setAccessible(true);
value = ctor.newInstance();
} catch (Exception ex) {
throw new MadvocException(ex);
}
}
}