Query.FilterPredicate (Google App Engine API for Java)

com.google.appengine.api.datastore

Class Query.FilterPredicate

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

• All Implemented Interfaces:

  java.io.Serializable

  Enclosing class:

  Query

  ---

  
  

  public static final class Query.FilterPredicate
  extends Query.Filter

  A Query.Filter on a single property.

  See Also:

  Serialized Form

• • Constructor Summary

    Constructors 

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

  • Method Summary

    All Methods Instance Methods Concrete Methods 

    Modifier and Type	Method and Description
    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

    • FilterPredicate

      public 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