com.antelmann.db
Class PropertyEntryFilter<T extends PropertyEntry>

java.lang.Object
  com.antelmann.db.PropertyEntryFilter<T>

All Implemented Interfaces:

CascadingFilter<T>, Filter<T>, Serializable

public class PropertyEntryFilter<T extends PropertyEntry>
extends Object
implements Serializable, CascadingFilter<T>

filters on the properties of an entity based on simple equality of key/value pairs. This filter supports Range objects as values for a restriction. This filter also supports Object[] as values for a restriction, in which case the key value is satisfied if it is equal to any of the values within the array.

Author:

Holger Antelmann

See Also:

Range, Serialized Form

Field Summary

Fields inherited from interface com.antelmann.util.Filter

EXCLUDE_ALL_FILTER, INCLUDE_ALL_FILTER

Constructor Summary

PropertyEntryFilter()
a filter with an empty map of restrictions

PropertyEntryFilter(Map<String,Object> restrictions)

PropertyEntryFilter(String key, Object value)

Method Summary

boolean	accept(T entry) returns true only if all keys in the given restrictions map to the same property values in the given entry.
String	getFilterString()
Filter<? super T>	getInnerFilter()
Map<String,Object>	getRestrictions() provides direct access to the embedded restrictions - DO NOT MODIFY WHILE USING THE FILTER
void	setFilterString(String filterString)
void	setInnerFilter(Filter<? super T> filter)

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyEntryFilter

public PropertyEntryFilter()

a filter with an empty map of restrictions

PropertyEntryFilter

public PropertyEntryFilter(String key,
                           Object value)

PropertyEntryFilter

public PropertyEntryFilter(Map<String,Object> restrictions)

Method Detail

getFilterString

public String getFilterString()

setFilterString

public void setFilterString(String filterString)

getRestrictions

public Map<String,Object> getRestrictions()

provides direct access to the embedded restrictions - DO NOT MODIFY WHILE USING THE FILTER

accept

public boolean accept(T entry)
               throws ClassCastException

returns true only if all keys in the given restrictions map to the same property values in the given entry. IsNotNullCondition, NotNullCondition, Object[] and Range values in the restriction map are handled separately.

Specified by:

accept in interface Filter<T extends PropertyEntry>

Throws:

ClassCastException - if the property value doesn't correspond to a Range's expected object

See Also:

NotCondition, SQLConstraint.NOT_NULL, SQLConstraint.IS_NULL, Range

getInnerFilter

public Filter<? super T> getInnerFilter()

Specified by:

getInnerFilter in interface CascadingFilter<T extends PropertyEntry>

setInnerFilter

public void setInnerFilter(Filter<? super T> filter)

Specified by:

setInnerFilter in interface CascadingFilter<T extends PropertyEntry>