com.metamatrix.query.sql.lang
Class CollectionValueIterator

java.lang.Object
  com.metamatrix.query.sql.lang.CollectionValueIterator

All Implemented Interfaces:

ValueIterator

public class CollectionValueIterator
extends java.lang.Object
implements ValueIterator

Constructor Summary

CollectionValueIterator(java.util.Collection vals)

Method Summary

boolean	hasNext() Returns true if the iteration has more values.
java.lang.Object	next() Returns the next Expression or Object value in the interation.
void	reset() Optional reset method - allows a single instance of a ValueIterator implementation to be resettable, such that the next call to next returns the first element in the iteration (if any).

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionValueIterator

public CollectionValueIterator(java.util.Collection vals)

Method Detail

hasNext

public boolean hasNext()
                throws MetaMatrixComponentException

Description copied from interface: ValueIterator

Returns true if the iteration has more values. (In other words, returns true if next would return a value rather than throwing an exception.)

Specified by:

hasNext in interface ValueIterator

Returns:

true if this ValueIterator has more values.

Throws:

MetaMatrixComponentException - indicating a non business- related Exception such as a service or bean being unavailable, or a communication failure.

Since:

4.3

See Also:

ValueIterator.hasNext()

next

public java.lang.Object next()
                      throws MetaMatrixComponentException

Description copied from interface: ValueIterator

Returns the next Expression or Object value in the interation.

Specified by:

next in interface ValueIterator

Returns:

the next Expression or Object value in the iteration.

Throws:

MetaMatrixComponentException - indicating a non business- related Exception such as a service or bean being unavailable, or a communication failure.

Since:

4.3

See Also:

ValueIterator.next()

reset

public void reset()

Description copied from interface: ValueIterator

Optional reset method - allows a single instance of a ValueIterator implementation to be resettable, such that the next call to next returns the first element in the iteration (if any). This method should be able to be called at any point during the lifecycle of a ValueIterator instance.

Specified by:

reset in interface ValueIterator

Since:

4.3

See Also:

ValueIterator.reset()