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Posted to jcs-dev@jakarta.apache.org by hc...@apache.org on 2005/01/22 22:34:43 UTC
cvs commit: jakarta-turbine-jcs/sandbox/yajcache/src/org/apache/jcs/yajcache/util BeanUtils.java ClassUtils.java SerializeUtils.java
hchar 2005/01/22 13:34:43
Added: sandbox/yajcache/src/org/apache/jcs/yajcache/util
BeanUtils.java ClassUtils.java SerializeUtils.java
Log:
move yajcache to sandbox
Revision Changes Path
1.1 jakarta-turbine-jcs/sandbox/yajcache/src/org/apache/jcs/yajcache/util/BeanUtils.java
Index: BeanUtils.java
===================================================================
/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License")
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jcs.yajcache.util;
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.jcs.yajcache.annotate.*;
/**
*
* @author Hanson Char
*/
@CopyRightApache
public enum BeanUtils {
inst;
private static final boolean debug = false;
private Log log = debug ? LogFactory.getLog(this.getClass()) : null;
public <B> B cloneDeep(B bean) {
if (bean == null
|| ClassUtils.inst.isImmutable(bean))
return bean;
return (B)this.fromXmlByteArray(this.toXmlByteArray(bean));
}
public <B> B cloneShallow(B bean) {
if (bean == null
|| ClassUtils.inst.isImmutable(bean))
return bean;
try {
return (B)org.apache.commons.beanutils.BeanUtils.cloneBean(bean);
} catch(Exception ex) {
LogFactory.getLog(this.getClass()).error("", ex);
throw new RuntimeException(ex);
}
}
public byte[] toXmlByteArray(Object bean) {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
XMLEncoder out = new XMLEncoder(bos);
out.writeObject(bean);
out.close();
return bos.toByteArray();
}
public Object fromXmlByteArray(byte[] bytes) {
if (debug)
log.debug(new String(bytes));
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
XMLDecoder in = new XMLDecoder(bis);
Object toBean = in.readObject();
in.close();
return toBean;
}
}
1.1 jakarta-turbine-jcs/sandbox/yajcache/src/org/apache/jcs/yajcache/util/ClassUtils.java
Index: ClassUtils.java
===================================================================
/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License")
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jcs.yajcache.util;
import java.math.BigDecimal;
import java.math.BigInteger;
import org.apache.jcs.yajcache.annotate.*;
/**
*
* @author Hanson Char
*/
@CopyRightApache
public enum ClassUtils {
inst;
/**
* Returns true if instances of the given class is known to be immutable;
* false if we don't know.
*/
public boolean isImmutable(Class t) {
return t == String.class
|| t.isPrimitive()
|| t == Boolean.class
|| t == Byte.class
|| t == Character.class
|| t == Short.class
|| t == Integer.class
|| t == Long.class
|| t == Float.class
|| t == Double.class
|| t == BigInteger.class
|| t == BigDecimal.class
|| t.isEnum()
;
}
public boolean isImmutable(Object obj) {
return this.isImmutable(obj.getClass());
}
}
1.1 jakarta-turbine-jcs/sandbox/yajcache/src/org/apache/jcs/yajcache/util/SerializeUtils.java
Index: SerializeUtils.java
===================================================================
/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License")
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jcs.yajcache.util;
import java.io.Serializable;
import java.lang.reflect.Array;
import org.apache.commons.lang.SerializationUtils;
import org.apache.jcs.yajcache.annotate.*;
/**
* @author Hanson Char
*/
@CopyRightApache
public enum SerializeUtils {
inst;
/**
* Duplicates the given object.
*
* @return a duplicate of the given Serializable object,
* short-cutting the deep clone process if possible.
*/
public <V extends Serializable> V dup(V obj) {
Class k = null;
if (obj == null
|| ClassUtils.inst.isImmutable(k=obj.getClass()))
return obj;
Class t = k.getComponentType();
if (t != null) {
// an array.
if (ClassUtils.inst.isImmutable(t))
{
// array elements are immutable.
// short cut via shallow clone.
return this.cloneArray(obj);
}
}
// deep clone.
return (V)SerializationUtils.clone(obj);
}
private <A> A cloneArray(A a) {
int len = Array.getLength(a);
Object result = Array.newInstance(a.getClass().getComponentType(), len);
System.arraycopy(a, 0, result, 0, len);
return (A)result;
}
// public Class<?> getLeaveComponentType(Class<?> k) {
// if (k == null)
// return k;
// if (k.isArray()) {
// return this.getLeaveComponentType(k.getComponentType());
// }
// return k.getClass();
// }
}
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