Package com.exedio.cope.misc

Class QueryIterators

java.lang.Object

com.exedio.cope.misc.QueryIterators

public final class QueryIterators
extends Object

Method Summary

Modifier and Type	Method	Description
static <E> Iterator<E>	iterateStableQuery(Query<E> query, int slice)
static <E extends Item> Iterator<E>	iterateType(Type<E> type, Condition condition, int slice)
static <E extends Item> Iterator<E>	iterateTypeTransactionally(Type<E> type, Condition condition, int slice)	Works as iterateType(Type, Condition, int) but creates its own transaction whenever needed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

iterateType

public static <E extends Item> Iterator<E> iterateType(Type<E> type,
                                                       Condition condition,
                                                       int slice)

iterateTypeTransactionally

public static <E extends Item> Iterator<E> iterateTypeTransactionally(Type<E> type,
                                                                      Condition condition,
                                                                      int slice)

Works as iterateType(Type, Condition, int) but creates its own transaction whenever needed.

iterateStableQuery

public static <E> Iterator<E> iterateStableQuery(Query<E> query,
                                                 int slice)

Parameters:

query - BEWARE: The mechanism of this iterator works only, if the query result is stable. This means, the result of the query does not change while iterating. Otherwise, the iterator may miss some results, or return duplicates. Consider using iterateType(com.exedio.cope.Type, com.exedio.cope.Condition, int) to deal with unstable queries.