org.objectstyle.cayenne.access.QueryResult Maven / Gradle / Ivy
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*
* The ObjectStyle Group Software License, version 1.1
* ObjectStyle Group - http://objectstyle.org/
*
* Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
* of the software. All rights reserved.
*
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* modification, are permitted provided that the following conditions
* are met:
*
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* must include the following acknowlegement:
* "This product includes software developed by independent contributors
* and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
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* "andrus at objectstyle dot org".
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*
* This software consists of voluntary contributions made by many
* individuals and hosted on ObjectStyle Group web site. For more
* information on the ObjectStyle Group, please see
* (Integer)getUpdates(query).get(0), kind of like Google's "I'm feeling lucky".
* Returns -1 if no update count is found for the query.
*/
public int getFirstUpdateCount(Query query) {
List allResults = getResults(query);
int size = allResults.size();
if (size > 0) {
Iterator it = allResults.iterator();
while (it.hasNext()) {
Object object = it.next();
// if int
if (object instanceof Number) {
return ((Number) object).intValue();
}
// if batch...
else if (object instanceof int[]) {
int[] counts = (int[]) object;
return counts.length > 0 ? counts[0] : -1;
}
}
}
return -1;
}
/**
* Returns the first update count. Returns int[0] if there was no update results for
* the query.
*
* @since 1.2
*/
public int[] getFirstUpdateCounts(Query query) {
List allResults = getResults(query);
int size = allResults.size();
if (size > 0) {
Iterator it = allResults.iterator();
while (it.hasNext()) {
Object object = it.next();
// if int
if (object instanceof Number) {
return new int[] {
((Number) object).intValue()
};
}
// if batch...
else if (object instanceof int[]) {
return (int[]) object;
}
}
}
return new int[0];
}
/**
* Returns the first results for the query. This is a shortcut for
* (List)getRows(query).get(0), kind of like Google's "I'm feeling lucky".
*/
public List getFirstRows(Query query) {
List allResults = getResults(query);
int size = allResults.size();
if (size == 0) {
return Collections.EMPTY_LIST;
}
else {
Iterator it = allResults.iterator();
while (it.hasNext()) {
Object obj = it.next();
if (obj instanceof List) {
return (List) obj;
}
}
}
return Collections.EMPTY_LIST;
}
/**
* Returns a List that itself contains Lists of data rows for each ResultSet returned
* by the query. ResultSets are returned in the oder they were obtained. Any updates
* that were performed are not included.
*/
public List getRows(Query query) {
List allResults = getResults(query);
int size = allResults.size();
if (size == 0) {
return Collections.EMPTY_LIST;
}
List list = new ArrayList(size);
Iterator it = allResults.iterator();
while (it.hasNext()) {
Object obj = it.next();
if (obj instanceof List) {
list.add(obj);
}
}
return list;
}
/**
* Returns a List that contains java.lang.Integer objects for each one of the update
* counts returned by the query. Update counts are returned in the order they were
* obtained. Batched and regular updates are combined together.
*/
public List getUpdates(Query query) {
List allResults = getResults(query);
int size = allResults.size();
if (size == 0) {
return Collections.EMPTY_LIST;
}
List list = new ArrayList(size);
Iterator it = allResults.iterator();
while (it.hasNext()) {
Object object = it.next();
if (object instanceof Number) {
list.add(object);
}
else if (object instanceof int[]) {
int[] ints = (int[]) object;
for (int i = 0; i < ints.length; i++) {
list.add(new Integer(ints[i]));
}
}
}
return list;
}
/**
* Overrides superclass implementation to rethrow an exception immediately.
*/
public void nextQueryException(Query query, Exception ex) {
super.nextQueryException(query, ex);
throw new CayenneRuntimeException("Query exception.", Util.unwindException(ex));
}
/**
* Overrides superclass implementation to rethrow an exception immediately.
*/
public void nextGlobalException(Exception ex) {
super.nextGlobalException(ex);
throw new CayenneRuntimeException("Global exception.", Util.unwindException(ex));
}
/**
* Always returns false, iterated results are not supported.
*/
public boolean isIteratedResult() {
return false;
}
public void nextBatchCount(Query query, int[] resultCount) {
List list = (List) queries.get(query);
if (list == null) {
list = new ArrayList(5);
queries.put(query, list);
}
list.add(resultCount);
}
public void nextCount(Query query, int resultCount) {
super.nextCount(query, resultCount);
List list = (List) queries.get(query);
if (list == null) {
list = new ArrayList(5);
queries.put(query, list);
}
list.add(new Integer(resultCount));
}
public void nextDataRows(Query query, List dataRows) {
super.nextDataRows(query, dataRows);
List list = (List) queries.get(query);
if (list == null) {
list = new ArrayList(5);
queries.put(query, list);
}
list.add(dataRows);
}
public void nextDataRows(Query q, ResultIterator it) {
throw new CayenneRuntimeException("Iterated results are not supported by "
+ this.getClass().getName());
}
}
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