com.google.appengine.api.datastore
Class Query.FilterPredicate

java.lang.Object
  com.google.appengine.api.datastore.Query.FilterPredicate

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

Query

public static final class Query.FilterPredicate
extends java.lang.Object
implements java.io.Serializable

FilterPredicate is a data container that holds a single filter predicate.

See Also:

Serialized Form

Constructor Summary

Query.FilterPredicate(java.lang.String propertyName, Query.FilterOperator operator, java.lang.Object value)
Constructs a filter predicate from the given parameters.

Method Summary

boolean	equals(java.lang.Object o)
Query.FilterOperator	getOperator() Gets the operator describing how to apply the filter.
java.lang.String	getPropertyName() Gets the name of the property to be filtered on.
java.lang.Object	getValue() Gets the argument to the filter operator.
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Query.FilterPredicate

public Query.FilterPredicate(java.lang.String propertyName,
                             Query.FilterOperator operator,
                             java.lang.Object value)

Constructs a filter predicate from the given parameters.

Parameters:

propertyName - the name of the property on which to filter

operator - the operator to apply

value - A single instances of a supported type or if operator is Query.FilterOperator.IN a non-empty Iterable object containing instances of supported types.

Throws:

java.lang.IllegalArgumentException - If the provided filter values are not supported.

See Also:

DataTypeUtils.isSupportedType(Class)

Method Detail

getPropertyName

public java.lang.String getPropertyName()

Gets the name of the property to be filtered on.

getOperator

public Query.FilterOperator getOperator()

Gets the operator describing how to apply the filter.

getValue

public java.lang.Object getValue()

Gets the argument to the filter operator.

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object