Class Predicate

java.lang.Object
software.amazon.awssdk.services.amplifyuibuilder.model.Predicate
All Implemented Interfaces:
Serializable, SdkPojo, ToCopyableBuilder<Predicate.Builder,Predicate>
@Generated("software.amazon.awssdk:codegen") public final class Predicate extends Object implements SdkPojo, Serializable, ToCopyableBuilder<Predicate.Builder,Predicate>

Stores information for generating Amplify DataStore queries. Use a Predicate to retrieve a subset of the data in a collection.

See Also:

  • Method Details

    • hasOr

      public final boolean hasOr()
      For responses, this returns true if the service returned a value for the Or property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • or

      public final List<Predicate> or()

      A list of predicates to combine logically.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasOr() method.

      Returns:
      A list of predicates to combine logically.

    • hasAnd

      public final boolean hasAnd()
      For responses, this returns true if the service returned a value for the And property. This DOES NOT check that the value is non-empty (for which, you should check the isEmpty() method on the property). This is useful because the SDK will never return a null collection or map, but you may need to differentiate between the service returning nothing (or null) and the service returning an empty collection or map. For requests, this returns true if a value for the property was specified in the request builder, and false if a value was not specified.

    • and

      public final List<Predicate> and()

      A list of predicates to combine logically.

      Attempts to modify the collection returned by this method will result in an UnsupportedOperationException.

      This method will never return null. If you would like to know whether the service returned this field (so that you can differentiate between null and empty), you can use the hasAnd() method.

      Returns:
      A list of predicates to combine logically.

    • field

      public final String field()

      The field to query.

      Returns:
      The field to query.

    • operator

      public final String operator()

      The operator to use to perform the evaluation.

      Returns:
      The operator to use to perform the evaluation.

    • operand

      public final String operand()

      The value to use when performing the evaluation.

      Returns:
      The value to use when performing the evaluation.

    • operandType

      public final String operandType()

      The type of value to use when performing the evaluation.

      Returns:
      The type of value to use when performing the evaluation.

    • toBuilder

      public Predicate.Builder toBuilder()
      Description copied from interface: ToCopyableBuilder
      Take this object and create a builder that contains all of the current property values of this object.
      Specified by:
      toBuilder in interface ToCopyableBuilder<Predicate.Builder,Predicate>
      Returns:
      a builder for type T

    • builder

      public static Predicate.Builder builder()

    • serializableBuilderClass

      public static Class<? extends Predicate.Builder> serializableBuilderClass()

    • hashCode

      public final int hashCode()
      Overrides:
      hashCode in class Object

    • equals

      public final boolean equals(Object obj)
      Overrides:
      equals in class Object

    • equalsBySdkFields

      public final boolean equalsBySdkFields(Object obj)
      Description copied from interface: SdkPojo
      Indicates whether some other object is "equal to" this one by SDK fields. An SDK field is a modeled, non-inherited field in an SdkPojo class, and is generated based on a service model.

      If an SdkPojo class does not have any inherited fields, equalsBySdkFields and equals are essentially the same.

      Specified by:
      equalsBySdkFields in interface SdkPojo
      Parameters:
      obj - the object to be compared with
      Returns:
      true if the other object equals to this object by sdk fields, false otherwise.

    • toString

      public final String toString()
      Returns a string representation of this object. This is useful for testing and debugging. Sensitive data will be redacted from this string using a placeholder value.
      Overrides:
      toString in class Object

    • getValueForField

      public final <T> Optional<T> getValueForField(String fieldName, Class<T> clazz)

    • sdkFields

      public final List<SdkField<?>> sdkFields()
      Specified by:
      sdkFields in interface SdkPojo
      Returns:
      List of SdkField in this POJO. May be empty list but should never be null.

    • sdkFieldNameToField

      public final Map<String,SdkField<?>> sdkFieldNameToField()
      Specified by:
      sdkFieldNameToField in interface SdkPojo
      Returns:
      The mapping between the field name and its corresponding field.