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/*
* $Header: /cvs/glassfish/admin/mbeans/src/java/com/sun/enterprise/admin/dottedname/valueaccessor/ValueAccessorBase.java,v 1.4 2007/05/05 05:24:08 tcfujii Exp $
* $Revision: 1.4 $
* $Date: 2007/05/05 05:24:08 $
*/
package com.sun.enterprise.admin.dottedname.valueaccessor;
import java.lang.reflect.Array;
import javax.management.MBeanServerConnection;
import javax.management.IntrospectionException;
import javax.management.ReflectionException;
import javax.management.InstanceNotFoundException;
import javax.management.AttributeList;
import javax.management.MBeanInfo;
import javax.management.MBeanAttributeInfo;
import javax.management.ObjectName;
import javax.management.Attribute;
import com.sun.enterprise.admin.util.ClassUtil;
import com.sun.enterprise.admin.util.Tokenizer;
import com.sun.enterprise.admin.util.TokenizerImpl;
abstract class ValueAccessorBase implements ValueAccessor
{
final MBeanServerConnection mConn;
MBeanServerConnection
getMBS()
{
return( mConn );
}
public
ValueAccessorBase( MBeanServerConnection conn )
{
mConn = conn;
}
final char ARRAY_ELEMENT_SEPARATOR = ',';
final char ESCAPE_CHAR = '\\';
String []
stringToStringArray( final String s )
throws com.sun.enterprise.admin.util.TokenizerException
{
final String delimiters = "" + ARRAY_ELEMENT_SEPARATOR;
final String escapableChars = "" + ARRAY_ELEMENT_SEPARATOR + ESCAPE_CHAR;
final Tokenizer tok = new TokenizerImpl( s, delimiters, false, ESCAPE_CHAR, escapableChars );
final String [] values = tok.getTokens();
return( values );
}
Object []
convert( final String [] stringValues, final Class elementClass )
throws Exception
{
if ( elementClass == String.class )
{
return( stringValues );
}
if ( ClassUtil.classnameIsPrimitiveArray( elementClass.getName() ) )
{
throw new IllegalArgumentException( );
}
final Object [] values = (Object [])Array.newInstance( elementClass, stringValues.length );
for( int i = 0; i < values.length; ++i )
{
values[ i ] = ClassUtil.InstantiateFromString( elementClass, stringValues[ i ] );
}
return( values );
}
Object []
stringToArray( final String s, final Class elementClass )
throws Exception
{
final String [] stringValues = stringToStringArray( s );
final Object [] values = convert( stringValues, elementClass );
return( values );
}
Object
coerceToClass( final Class theClass, String value )
throws Exception
{
Object result = value;
if ( theClass != String.class )
{
if ( ClassUtil.classIsArray( theClass ) )
{
final String theClassName = theClass.getName();
final String elementClassName = ClassUtil.getArrayMemberClassName( theClassName );
// convert the string to an array of strings
result = stringToArray( value, ClassUtil.getClassFromName( elementClassName ) );
}
else
{
boolean canCoerce = true;
final Class resultClass = ClassUtil.PrimitiveClassToObjectClass( theClass );
if ( resultClass == Boolean.class )
{
// insist on "true" or "false" (case insensitive)
canCoerce = value.equalsIgnoreCase( "true" ) || value.equalsIgnoreCase( "false" );
}
if ( canCoerce )
{
result = ClassUtil.InstantiateFromString( resultClass, value );
}
}
}
return( result );
}
public abstract Attribute getValue( ObjectName objectName, String valueName ) throws Exception;
public abstract Attribute setValue( ObjectName objectName, Attribute attr ) throws Exception;
}