/*
* JBoss, Home of Professional Open Source
* Copyright 2010 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.infinispan.loaders.keymappers;
import org.infinispan.util.Base64;
import org.infinispan.util.ByteArrayKey;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Default implementation for {@link TwoWayKey2StringMapper} that knows how to handle all primitive
* wrapper keys and Strings.
*
* @author Mircea.Markus@jboss.com
* @author Tristan Tarrant
*
* @since 4.1
*/
public class DefaultTwoWayKey2StringMapper implements TwoWayKey2StringMapper {
private static final Log log = LogFactory.getLog(DefaultTwoWayKey2StringMapper.class);
private static final char NON_STRING_PREFIX = '\uFEFF';
private static final char SHORT_IDENTIFIER = '1';
private static final char BYTE_IDENTIFIER = '2';
private static final char LONG_IDENTIFIER = '3';
private static final char INTEGER_IDENTIFIER = '4';
private static final char DOUBLE_IDENTIFIER = '5';
private static final char FLOAT_IDENTIFIER = '6';
private static final char BOOLEAN_IDENTIFIER = '7';
private static final char BYTEARRAYKEY_IDENTIFIER = '8';
private static final char NATIVE_BYTEARRAYKEY_IDENTIFIER = '9';
@Override
public String getStringMapping(Object key) {
char identifier;
if (key.getClass().equals(String.class)) {
return key.toString();
} else if (key.getClass().equals(Short.class)) {
identifier = SHORT_IDENTIFIER;
} else if (key.getClass().equals(Byte.class)) {
identifier = BYTE_IDENTIFIER;
} else if (key.getClass().equals(Long.class)) {
identifier = LONG_IDENTIFIER;
} else if (key.getClass().equals(Integer.class)) {
identifier = INTEGER_IDENTIFIER;
} else if (key.getClass().equals(Double.class)) {
identifier = DOUBLE_IDENTIFIER;
} else if (key.getClass().equals(Float.class)) {
identifier = FLOAT_IDENTIFIER;
} else if (key.getClass().equals(Boolean.class)) {
identifier = BOOLEAN_IDENTIFIER;
} else if (key.getClass().equals(ByteArrayKey.class)) {
return generateString(BYTEARRAYKEY_IDENTIFIER, Base64.encodeBytes(((ByteArrayKey)key).getData()));
} else if (key.getClass().equals(byte[].class)) {
return generateString(NATIVE_BYTEARRAYKEY_IDENTIFIER, Base64.encodeBytes((byte[])key));
} else {
throw new IllegalArgumentException("Unsupported key type: " + key.getClass().getName());
}
return generateString(identifier, key.toString());
}
@Override
public Object getKeyMapping(String key) {
log.tracef("Get mapping for key: %s", key);
if (key.length() > 0 && key.charAt(0) == NON_STRING_PREFIX) {
char type = key.charAt(1);
String value = key.substring(2);
switch (type) {
case SHORT_IDENTIFIER:
return Short.parseShort(value);
case BYTE_IDENTIFIER:
return Byte.parseByte(value);
case LONG_IDENTIFIER:
return Long.parseLong(value);
case INTEGER_IDENTIFIER:
return Integer.parseInt(value);
case DOUBLE_IDENTIFIER:
return Double.parseDouble(value);
case FLOAT_IDENTIFIER:
return Float.parseFloat(value);
case BOOLEAN_IDENTIFIER:
return Boolean.parseBoolean(value);
case BYTEARRAYKEY_IDENTIFIER:
return new ByteArrayKey(Base64.decode(value));
case NATIVE_BYTEARRAYKEY_IDENTIFIER:
return Base64.decode(value);
default:
throw new IllegalArgumentException("Unsupported type code: " + type);
}
} else {
return key;
}
}
@Override
public boolean isSupportedType(Class<?> keyType) {
return isPrimitive(keyType);
}
private String generateString(char identifier, String s) {
return String.valueOf(NON_STRING_PREFIX) + String.valueOf(identifier) + s;
}
static boolean isPrimitive(Class<?> key) {
return key == String.class || key == Short.class || key == Byte.class || key == Long.class || key == Integer.class || key == Double.class || key == Float.class || key == Boolean.class || key == ByteArrayKey.class || key == byte[].class;
}
}