com.rapidminer.operator.preprocessing.filter.attributes
Class BlockTypeAttributeFilter

java.lang.Object
  com.rapidminer.operator.preprocessing.filter.attributes.AbstractAttributeFilterCondition
      com.rapidminer.operator.preprocessing.filter.attributes.BlockTypeAttributeFilter

All Implemented Interfaces:

AttributeFilterCondition

public class BlockTypeAttributeFilter
extends AbstractAttributeFilterCondition

This condition filters out all attributes whose block type does not match the one given in the parameter block_type. This can be useful e.g. for preprocessing operators that can handle only series attributes. Features of the type mentioned in except_block_type are removed even if they match block_type.

Author:

Sebastian Land

Nested Class Summary

Nested classes/interfaces inherited from interface com.rapidminer.operator.preprocessing.filter.attributes.AttributeFilterCondition

AttributeFilterCondition.ScanResult

Field Summary

static java.lang.String	PARAMETER_ADD_EXCEPTION
static java.lang.String	PARAMETER_BLOCK_TYPE
static java.lang.String	PARAMETER_EXCEPT_BLOCK_TYPE

Constructor Summary

BlockTypeAttributeFilter()

Method Summary

AttributeFilterCondition.ScanResult	beforeScanCheck(Attribute attribute) This method initializes this condition and resets all counters.
java.util.List<ParameterType>	getParameterTypes(ParameterHandler operator, InputPort inPort, int... valueTypes) Just returns an empty list.
void	init(ParameterHandler operator) Initializes the condition before checking anything.
MetaDataInfo	isFilteredOutMetaData(AttributeMetaData attribute, ParameterHandler handler) This method tries to check if the given attribute is contained, removed from the resulting operation or if the result is unpredictable.

Methods inherited from class com.rapidminer.operator.preprocessing.filter.attributes.AbstractAttributeFilterCondition

check, checkAfterFullScan, isNeedingFullScan, isNeedingScan

Methods inherited from class java.lang.Object

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

Field Detail

PARAMETER_BLOCK_TYPE

public static final java.lang.String PARAMETER_BLOCK_TYPE

See Also:

Constant Field Values

PARAMETER_ADD_EXCEPTION

public static final java.lang.String PARAMETER_ADD_EXCEPTION

See Also:

Constant Field Values

PARAMETER_EXCEPT_BLOCK_TYPE

public static final java.lang.String PARAMETER_EXCEPT_BLOCK_TYPE

See Also:

Constant Field Values

Constructor Detail

BlockTypeAttributeFilter

public BlockTypeAttributeFilter()

Method Detail

init

public void init(ParameterHandler operator)
          throws UserError,
                 ConditionCreationException

Description copied from interface: AttributeFilterCondition

Initializes the condition before checking anything. If checking depends on parameters, their values might be retrieved in this method.

Specified by:

init in interface AttributeFilterCondition

Overrides:

init in class AbstractAttributeFilterCondition

Throws:

UserError

ConditionCreationException - TODO

isFilteredOutMetaData

public MetaDataInfo isFilteredOutMetaData(AttributeMetaData attribute,
                                          ParameterHandler handler)
                                   throws ConditionCreationException

Description copied from interface: AttributeFilterCondition

This method tries to check if the given attribute is contained, removed from the resulting operation or if the result is unpredictable.

Parameters:

attribute - the meta data of the attribute

handler - to get the value of the defined parameters

Returns:

Throws:

ConditionCreationException

beforeScanCheck

public AttributeFilterCondition.ScanResult beforeScanCheck(Attribute attribute)
                                                    throws UserError

Description copied from interface: AttributeFilterCondition

This method initializes this condition and resets all counters. It returns REMOVE, if the attribute can be removed without checking examples. If it has been removed, no checking during examples will occur. If it returns UNCHECKED, this Attribute Filter needs a full check and hence the attribute cannot be deleted or kept. Distinguishing this is important, because of the inverting, which otherwise might remove attributes although they only have been kept for later checking.

Parameters:

attribute - this is the attribute, the filter will have to check for.

Throws:

UserError

getParameterTypes

public java.util.List<ParameterType> getParameterTypes(ParameterHandler operator,
                                                       InputPort inPort,
                                                       int... valueTypes)

Description copied from class: AbstractAttributeFilterCondition

Just returns an empty list. Subclasses might add parameters

Specified by:

getParameterTypes in interface AttributeFilterCondition

Overrides:

getParameterTypes in class AbstractAttributeFilterCondition