org.imemex.operators
Class AbstractFilterPullOperator<E>

java.lang.Object
  org.imemex.operators.AbstractPullOperator<E>
      org.imemex.operators.AbstractFilterPullOperator<E>

All Implemented Interfaces:

java.util.Iterator<E>, Operator, PullOperator<E>

Direct Known Subclasses:

RVFilterPullOperator

public abstract class AbstractFilterPullOperator<E>
extends AbstractPullOperator<E>

New Filter model.

Author:

Marcos, Lukas

Nested Class Summary

Nested classes/interfaces inherited from interface org.imemex.operators.Operator

Operator.ExecTimeType

Field Summary

Fields inherited from class org.imemex.operators.AbstractPullOperator

measureNext

Constructor Summary

AbstractFilterPullOperator(PullOperator<E> input, Predicate predicate)
Instantiate this filter.

Method Summary

void	close() Does nothing.
abstract java.util.Map<java.lang.String,java.lang.Object>	getBindings(Predicate predicate, E input)
java.util.List<PullOperator>	getInputOperators() Get input operators of this operator.
void	open() Does nothing.

Methods inherited from class org.imemex.operators.AbstractPullOperator

addExecTime, getDesc, getExecTime, getMetaData, getNumberOfElementsPassed, hasNext, next, peek, remove, setDesc, toObjectPullOperator, toString, toXML

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AbstractFilterPullOperator

public AbstractFilterPullOperator(PullOperator<E> input,
                                  Predicate predicate)

Instantiate this filter.

Parameters:

input - a pull operator of anything. How the input is processed only depends on the getBindings() method.

predicate - the predicate to evaluate against the input.

Method Detail

open

public void open()

Description copied from class: AbstractPullOperator

Does nothing.

Specified by:

open in interface Operator

Overrides:

open in class AbstractPullOperator<E>

getBindings

public abstract java.util.Map<java.lang.String,java.lang.Object> getBindings(Predicate predicate,
                                                                             E input)

close

public void close()

Description copied from class: AbstractPullOperator

Does nothing.

Specified by:

close in interface Operator

Overrides:

close in class AbstractPullOperator<E>

getInputOperators

public java.util.List<PullOperator> getInputOperators()

Description copied from interface: PullOperator

Get input operators of this operator. This is mainly used to recursively generate an XML representation of an operator tree.

Specified by:

getInputOperators in interface PullOperator<E>

Overrides:

getInputOperators in class AbstractPullOperator<E>

Returns:

list of operators