/*
Copyright (c) 2003-2009 ITerative Consulting Pty Ltd. All Rights Reserved.
Redistribution and use in source and binary forms, with or without modification, are permitted
provided that the following conditions are met:
o Redistributions of source code must retain the above copyright notice, this list of conditions and
the following disclaimer.
o 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.
o This jcTOOL Helper Class software, whether in binary or source form may not be used within,
or to derive, any other product without the specific prior written permission of the copyright holder
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "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.
*/
package Express.services;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.Serializable;
import DisplayProject.binding.beans.ExtendedPropertyChangeSupport;
import DisplayProject.binding.beans.Observable;
import Framework.Constants;
import Framework.HashTable;
import Framework.RuntimeProperties;
/**
* This class appears in the project, but is for internal use only and is not documented.
* <p>
* @author ITerative Consulting
* @since 26-Feb-2008
*/
@RuntimeProperties(isDistributed=false, isAnchored=false, isShared=false, isTransactional=false)
@SuppressWarnings("serial")
public class ConcurrencyKeys
implements Serializable, Observable
{
// ----------
// Attributes
// ----------
public PropertyChangeSupport qq_Listeners = new ExtendedPropertyChangeSupport(this, true);
private HashTable keys;
private int lastClean;
// ------------
// Constructors
// ------------
public ConcurrencyKeys() {
// Explicitly call the superclass constructor to prevent the implicit call
super();
}
// -------
// Methods
// -------
public void addPropertyChangeListener(String property, PropertyChangeListener listener) {
qq_Listeners.addPropertyChangeListener(property, listener);
}
public void addPropertyChangeListener(PropertyChangeListener listener) {
qq_Listeners.addPropertyChangeListener(listener);
}
public void removePropertyChangeListener(String property, PropertyChangeListener listener) {
qq_Listeners.removePropertyChangeListener(property, listener);
}
public void removePropertyChangeListener(PropertyChangeListener listener) {
qq_Listeners.removePropertyChangeListener(listener);
}
/**
* add<p>
* <p>
* @param keyCB Type: ConcurrencyKeyCB
*/
public void add(ConcurrencyKeyCB keyCB) {
this.keys.enter(keyCB, keyCB.getKey());
}
/**
* drop<p>
* <p>
* @param keyCB Type: ConcurrencyKeyCB
* @param stamp Type: int
*/
@SuppressWarnings("unchecked")
public void drop(ConcurrencyKeyCB keyCB, int stamp) {
keyCB.setCount(keyCB.getCount()-1);
if (keyCB.getCount() <= 0) {
if (keyCB.getCount() < 0) {
throw new Error(Error.CM_NEGATIVE_REF_COUNT, "Drop", this, keyCB.getKey(), Error.qq_Resolver.cERROR_METHODNAME_ORIGINATOR_PARAM1).getException();
}
else if (keyCB.getLocked()) {
throw new Error(Error.CM_DROPPING_LOCKED_KEY, "Drop", this, keyCB.getKey(), Error.qq_Resolver.cERROR_METHODNAME_ORIGINATOR_PARAM1).getException();
}
if (keyCB.getUpdateStamp() == 0) {
this.keys.remove(keyCB.getKey());
}
if (stamp > this.lastClean) {
this.lastClean = stamp;
Array_Of_ConcurrencyKeyCB<ConcurrencyKeyCB> qq_localVector = this.keys.fillArray(Array_Of_ConcurrencyKeyCB.class);
if (qq_localVector != null) {
for (ConcurrencyKeyCB k : qq_localVector) {
if (k.getCount() == 0 && k.getStamp() < stamp) {
this.keys.remove(k.getKey());
}
}
}
}
}
}
/**
* get<p>
* <p>
* @param key Type: BusinessKey
* @return ConcurrencyKeyCB
*/
public ConcurrencyKeyCB get(BusinessKey key) {
return (ConcurrencyKeyCB)this.keys.find(key);
}
/**
* setup<p>
* <p>
* @param size Type: int (Input) (default in Forte: 0)
*/
public void setup(int size) {
int tableSize = size;
if (tableSize == 0) {
tableSize = 1000;
}
this.keys = new HashTable();
this.keys.setup(tableSize, new ConcurrencyKeyHash(Constants.SP_KT_OBJECT));
}
} // end class ConcurrencyKeys
// c Pass 2 Conversion Time: 312 milliseconds