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StatementIterator Class v. V0.9.1

Class: StatementIterator ----------------------------------------------------------------------------------

Iterator for traversing models. This class can be used for iterating forward and backward trough MemModels. It should be instanced using the getIterator() method of a MemModel.

<BR><BR>History:<UL> <LI>08-10-2004 : Class completely rewritten</LI> <LI>03-29-2004 : Problems with adding and removing statements fixed.</LI> <LI>02-21-2003 : First version of this class.</LI> </UL>

Authors	Daniel Westphal <mail at d-westphal dot de>, Chris Bizer

Properties implemented by StatementIterator

model

Reference to the MemModel

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position

Current position StatementIterator does not use the build in PHP array iterator, so you can use serveral iterators on a single MemModel.

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Methods implemented by StatementIterator

current

PHP statement current()

PHP	statement current()

Returns the current statement.

Return

or NULL if there is no current statement.

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getCurrentPosition

PHP integer getCurrentPosition()

PHP	integer getCurrentPosition()

Returns the current position of the iterator.

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hasNext

PHP boolean hasNext()

PHP	boolean hasNext()

Returns TRUE if there are more statements.

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hasPrevious

PHP boolean hasPrevious()

PHP	boolean hasPrevious()

Returns TRUE if the first statement has not been reached.

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moveFirst

PHP void moveFirst()

PHP	void moveFirst()

Moves the pointer to the first statement.

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moveLast

PHP void moveLast()

PHP	void moveLast()

Moves the pointer to the last statement.

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moveTo

PHP void moveTo(unknown $position)

PHP	void moveTo(unknown $position)

Moves the pointer to a specific statement. If you set an off-bounds value, the position will be set to the last element

Arguments

$position

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next

PHP statement next()

PHP	statement next()

Returns the next statement.

Return

or NULL if there is no next statement.

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previous

PHP statement previous()

PHP	statement previous()

Returns the previous statement.

Return

or NULL if there is no previous statement.

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StatementIterator

PHP StatementIterator(unknown $model)

PHP	StatementIterator(unknown $model)

Constructor

Arguments

$model

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