KeyValueType.java
/*
* Copyright (C) Christian Schulte <cs@schulte.it>, 2005-206
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* o Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* o 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 "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 AUTHORS OR COPYRIGHT HOLDERS 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.
*
* $JOMC: KeyValueType.java 5043 2015-05-27 07:03:39Z schulte $
*
*/
package org.jomc.ant.types;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import org.apache.commons.lang.builder.ToStringBuilder;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Location;
/**
* Datatype holding a {@code key}, {@code value} and {@code type} property.
*
* @author <a href="mailto:cs@schulte.it">Christian Schulte</a>
* @version $JOMC: KeyValueType.java 5043 2015-05-27 07:03:39Z schulte $
*/
public class KeyValueType implements Cloneable
{
/**
* The key of the type.
*/
private String key;
/**
* The value of the type.
*/
private String value;
/**
* The class of the type of {@code value}.
*/
private Class<?> type;
/**
* Creates a new {@code KeyValueType} instance.
*/
public KeyValueType()
{
super();
}
/**
* Gets the value of the {@code key} property.
*
* @return The value of the {@code key} property.
*
* @see #setKey(java.lang.String)
*/
public final String getKey()
{
return this.key;
}
/**
* Sets the value of the {@code key} property.
*
* @param k The new value of the {@code key} property.
*
* @see #getKey()
*/
public final void setKey( final String k )
{
this.key = k;
}
/**
* Gets the value of the {@code value} property.
*
* @return The value of the {@code value} property or {@code null}.
*
* @see #setValue(java.lang.String)
*/
public final String getValue()
{
return this.value;
}
/**
* Sets the value of the {@code value} property.
*
* @param v The new value of the {@code value} property or {@code null}.
*
* @see #getValue()
*/
public final void setValue( final String v )
{
this.value = v;
}
/**
* Gets the value of the {@code type} property.
*
* @return The value of the {@code type} property or {@code null}.
*
* @see #setType(java.lang.Class)
*/
public final Class<?> getType()
{
return this.type;
}
/**
* Sets the value of the {@code type} property.
*
* @param t The new value of the {@code type} property or {@code null}.
*
* @see #getType()
*/
public final void setType( final Class<?> t )
{
this.type = t;
}
/**
* Gets the object of the instance.
*
* @param location The location the object is requested at.
*
* @return The object of the instance or {@code null}.
*
* @throws NullPointerException if {@code location} is {@code null}.
* @throws BuildException if getting the object fails.
*
* @see #getType()
* @see #getValue()
*/
public Object getObject( final Location location ) throws BuildException
{
if ( location == null )
{
throw new NullPointerException( "location" );
}
try
{
Object o = this.getValue();
if ( o != null )
{
if ( this.getType() != null && !String.class.equals( this.getType() ) )
{
try
{
o = this.getType().getConstructor( String.class ).newInstance( o );
}
catch ( final NoSuchMethodException e )
{
final Method valueOf = this.getType().getMethod( "valueOf", String.class );
if ( Modifier.isStatic( valueOf.getModifiers() )
&& valueOf.getReturnType().equals( this.getType() ) )
{
o = valueOf.invoke( null, o );
}
else
{
throw new BuildException(
Messages.getMessage( "noSuchMethodCreatingValueObject", this.getType(),
this.getValue(), this.getType().getSimpleName() ), e, location );
}
}
}
}
else if ( this.getType() != null )
{
o = this.getType().newInstance();
}
return o;
}
catch ( final NoSuchMethodException e )
{
throw new BuildException(
Messages.getMessage( "noSuchMethodCreatingValueObject", this.getType(),
this.getValue(), this.getType().getSimpleName() ), e, location );
}
catch ( final InstantiationException e )
{
throw new BuildException( Messages.getMessage( "failureCreatingValueObject", this.getType(),
this.getValue() ), e, location );
}
catch ( final IllegalAccessException e )
{
throw new BuildException( Messages.getMessage( "failureCreatingValueObject", this.getType(),
this.getValue() ), e, location );
}
catch ( final InvocationTargetException e )
{
throw new BuildException( Messages.getMessage( "failureCreatingValueObject", this.getType(),
this.getValue() ), e, location );
}
}
/**
* Creates and returns a copy of this object.
*
* @return A copy of this object.
*/
@Override
public KeyValueType clone()
{
try
{
return (KeyValueType) super.clone();
}
catch ( final CloneNotSupportedException e )
{
throw new AssertionError( e );
}
}
/**
* Creates and returns a string representation of the object.
*
* @return A string representation of the object.
*/
@Override
public String toString()
{
return ToStringBuilder.reflectionToString( this );
}
}