com.sun.enterprise.admin.util.ArrayConversion Maven / Gradle / Ivy
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/*
* Copyright 2004-2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* $Header: /cvs/glassfish/admin-core/util/src/java/com/sun/enterprise/admin/util/ArrayConversion.java,v 1.2 2005/12/25 03:53:04 tcfujii Exp $
* $Revision: 1.2 $
* $Date: 2005/12/25 03:53:04 $
*/
package com.sun.enterprise.admin.util;
import java.lang.reflect.Array;
/*
Provides methods to convert arrays of primitive types to corresponding
arrays of Object types.
*/
public final class ArrayConversion
{
private
ArrayConversion( )
{
// disallow instantiation
}
private static Object []
convert( Object simpleArray )
{
final String className = simpleArray.getClass().getName();
//final String memberClassName = ClassUtil.getArrayMemberClassName( className );
final Class theClass = ClassUtil.getArrayElementClass( simpleArray.getClass() );
final int numItems = Array.getLength( simpleArray );
final Class elementClass = ClassUtil.PrimitiveClassToObjectClass( theClass );
final Object [] result = (Object [])Array.newInstance( elementClass, numItems );
for( int i = 0; i < numItems; ++i )
{
result[ i ] = Array.get( simpleArray, i );
}
return( result );
}
public static Object []
toAppropriateType( Object array)
{
return( (Object [])convert( array ) );
}
public static Boolean []
toBooleans( boolean [] array )
{
return( (Boolean [])convert( array ) );
}
public static Character []
toCharacters( char [] array )
{
return( (Character [])convert( array ) );
}
public static Byte []
toBytes( byte [] array )
{
return( (Byte [])convert( array ) );
}
public static Short []
toShorts( short [] array )
{
return( (Short [])convert( array ) );
}
public static Integer []
toIntegers( int [] array )
{
return( (Integer [])convert( array ) );
}
public static Long []
toLongs( long [] array )
{
return( (Long [])convert( array ) );
}
public static Float []
toFloats( float [] array )
{
return( (Float [])convert( array ) );
}
public static Double []
toDoubles( double [] array )
{
return( (Double [])convert( array ) );
}
public static Object []
createObjectArrayType( final Class elementType, final int size )
throws Exception
{
final Object [] result = (Object []) Array.newInstance( elementType, size );
return( result );
}
public static java.util.Set
toSet( Object [] array )
{
java.util.Set theSet = null;
if ( array.length == 0 )
{
theSet = java.util.Collections.EMPTY_SET;
}
else if ( array.length == 1 )
{
theSet = java.util.Collections.singleton( array[ 0 ] );
}
else
{
theSet = new java.util.HashSet();
for( int i = 0; i < array.length; ++i )
{
theSet.add( array[ i ] );
}
}
return( theSet );
}
public static Object []
setToArray( final java.util.Set s )
{
final java.util.Iterator iter = s.iterator();
final Object [] out = new Object [ s.size() ];
return( setToArray( s, out ) );
}
public static Object []
setToArray( final java.util.Set s, Object [] out )
{
final java.util.Iterator iter = s.iterator();
if ( out.length != s.size() )
{
throw new IllegalArgumentException();
}
int i = 0;
while ( iter.hasNext() )
{
out[ i ] = iter.next();
++i;
}
return( out );
}
}