92 lines
2.5 KiB
Java
92 lines
2.5 KiB
Java
/****************************************************************************
|
|
* This software is part of the gCube Project.
|
|
* Site: http://www.gcube-system.org/
|
|
****************************************************************************
|
|
* The gCube/gCore software is licensed as Free Open Source software
|
|
* conveying to the EUPL (http://ec.europa.eu/idabc/eupl).
|
|
* The software and documentation is provided by its authors/distributors
|
|
* "as is" and no expressed or
|
|
* implied warranty is given for its use, quality or fitness for a
|
|
* particular case.
|
|
****************************************************************************
|
|
* Filename: ISQueryCache.java
|
|
****************************************************************************
|
|
* @author <a href="mailto:daniele.strollo@isti.cnr.it">Daniele Strollo</a>
|
|
***************************************************************************/
|
|
|
|
package org.gcube.resourcemanagement.support.server.gcube;
|
|
|
|
import java.util.HashMap;
|
|
import java.util.List;
|
|
import java.util.Map;
|
|
|
|
class ISQueryCacheKeyT {
|
|
String keyValue = null;
|
|
String queryExpression = null;
|
|
|
|
public ISQueryCacheKeyT(String scope, String queryExpression, String... params) {
|
|
if (scope != null && queryExpression != null && params != null && params.length > 0) {
|
|
this.queryExpression = queryExpression.trim();
|
|
this.keyValue = scope + "*" + queryExpression + "*" + "[";
|
|
for (String entry : params) {
|
|
keyValue += "(" + entry + ")";
|
|
}
|
|
this.keyValue += "]";
|
|
}
|
|
}
|
|
|
|
public String getQueryExpression() {
|
|
return this.queryExpression;
|
|
}
|
|
|
|
@Override
|
|
public String toString() {
|
|
return this.keyValue;
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object obj) {
|
|
if (this.keyValue == null) {
|
|
return false;
|
|
}
|
|
if (obj instanceof ISQueryCacheKeyT) {
|
|
return this.keyValue.equals(((ISQueryCacheKeyT) obj).keyValue);
|
|
}
|
|
return super.equals(obj);
|
|
}
|
|
|
|
public int hashCode() {
|
|
return this.keyValue.hashCode();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @author Daniele Strollo (ISTI-CNR)
|
|
*
|
|
*/
|
|
public class ISQueryCache {
|
|
Map<ISQueryCacheKeyT, List<String>> results = new HashMap<ISQueryCacheKeyT, List<String>>();
|
|
|
|
public void insert(ISQueryCacheKeyT key, List<String> elem) {
|
|
this.results.put(key, elem);
|
|
}
|
|
|
|
public boolean contains(ISQueryCacheKeyT key) {
|
|
if (key == null) {
|
|
return false;
|
|
}
|
|
return this.results.containsKey(key);
|
|
}
|
|
|
|
public List<String> get(ISQueryCacheKeyT key) {
|
|
if (key != null && this.results.containsKey(key)) {
|
|
return this.results.get(key);
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public void empty() {
|
|
this.results.clear();
|
|
}
|
|
}
|