org.openmdx.base.persistence.spi.StandardFetchGroup Maven / Gradle / Ivy
/*
* ====================================================================
* Project: openMDX, http://www.openmdx.org/
* Description: Standard Fetch Group
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2009-2013, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * 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.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "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 COPYRIGHT OWNER OR CONTRIBUTORS
* 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.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.base.persistence.spi;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.jdo.FetchGroup;
import javax.jdo.JDOUserException;
/**
* Standard Fetch Group
*/
@SuppressWarnings({"rawtypes"})
public class StandardFetchGroup
implements FetchGroup
{
/**
* Constructor
*
* @param that
*/
public StandardFetchGroup(
FetchGroup that
){
this.name = that.getName();
this.type = that.getType();
this.postLoad = that.getPostLoad();
this.members = new HashMap();
for(Object member : that.getMembers()) {
String memberName = (String) member;
this.members.put(
memberName,
Integer.valueOf(that.getRecursionDepth(memberName))
);
}
}
/**
* Constructor
*
* @param type
* @param name
*/
public StandardFetchGroup(
Class type,
String name
){
this.type = type;
this.name = name;
this.postLoad = !DEFAULT.equals(name);
this.members = new HashMap();
}
private final String name;
private final Class type;
private final Map members;
private boolean postLoad;
private static final Integer DEFAULT_RECURSION_DEPTH = Integer.valueOf(1);
private boolean unmodifiable = false;
private void assertModifiability(
){
if(this.unmodifiable) {
throw new JDOUserException("This fetch group is unmodifiable");
}
}
private void assertMembership(
String memberName
){
if(!this.members.containsKey(memberName)) {
throw new JDOUserException("Not member of this fetch group: " + memberName);
}
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#addCategory(java.lang.String)
*/
public FetchGroup addCategory(String categoryName) {
assertModifiability();
return null;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#addMember(java.lang.String)
*/
public FetchGroup addMember(String memberName) {
assertModifiability();
if(!this.members.containsKey(memberName)) {
this.members.put(memberName,DEFAULT_RECURSION_DEPTH);
}
return this;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#addMembers(java.lang.String[])
*/
public FetchGroup addMembers(String... memberNames) {
assertModifiability();
for(String memberName : memberNames) {
if(!this.members.containsKey(memberName)) {
this.members.put(memberName,DEFAULT_RECURSION_DEPTH);
}
}
return this;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#getMembers()
*/
public Set getMembers() {
return Collections.unmodifiableSet(new HashSet(this.members.keySet()));
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#getName()
*/
public String getName() {
return this.name;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#getPostLoad()
*/
public boolean getPostLoad() {
return this.postLoad;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#getRecursionDepth(java.lang.String)
*/
public int getRecursionDepth(String memberName) {
assertModifiability();
assertMembership(memberName);
return this.members.get(memberName).intValue();
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#getType()
*/
public Class getType() {
return this.type;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#isUnmodifiable()
*/
public boolean isUnmodifiable() {
return this.unmodifiable;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#removeCategory(java.lang.String)
*/
public FetchGroup removeCategory(String categoryName) {
assertModifiability();
return null;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#removeMember(java.lang.String)
*/
public FetchGroup removeMember(String memberName) {
assertModifiability();
this.members.remove(memberName);
return this;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#removeMembers(java.lang.String[])
*/
public FetchGroup removeMembers(String... memberNames) {
assertModifiability();
for(String memberName : memberNames) {
this.members.remove(memberName);
}
return this;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#setPostLoad(boolean)
*/
public FetchGroup setPostLoad(boolean postLoad) {
assertModifiability();
this.postLoad = true;
return this;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#setRecursionDepth(java.lang.String, int)
*/
public FetchGroup setRecursionDepth(String memberName, int recursionDepth) {
assertModifiability();
assertMembership(memberName);
this.members.put(memberName, Integer.valueOf(recursionDepth));
return this;
}
/* (non-Javadoc)
* @see javax.jdo.FetchGroup#setUnmodifiable()
*/
public FetchGroup setUnmodifiable() {
this.unmodifiable = true;
return this;
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if(obj instanceof FetchGroup) {
FetchGroup that = (FetchGroup) obj;
return
this.type == that.getType() &&
this.name.equals(that.getName());
}
return false;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return this.name.hashCode() + 31 * this.type.hashCode();
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "<" + this.name + "," + this.type.getName() + ">";
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy