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:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface Predicate.Builder

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`List<Predicate>`	`and()`	A list of predicates to combine logically.
`static Predicate.Builder`	`builder()`
`boolean`	`equals(Object obj)`
`boolean`	`equalsBySdkFields(Object obj)`
`String`	`field()`	The field to query.
`<T> Optional<T>`	`getValueForField(String fieldName, Class<T> clazz)`
`boolean`	`hasAnd()`	For responses, this returns true if the service returned a value for the And property.
`int`	`hashCode()`
`boolean`	`hasOr()`	For responses, this returns true if the service returned a value for the Or property.
`String`	`operand()`	The value to use when performing the evaluation.
`String`	`operandType()`	The type of value to use when performing the evaluation.
`String`	`operator()`	The operator to use to perform the evaluation.
`List<Predicate>`	`or()`	A list of predicates to combine logically.
`Map<String,SdkField<?>>`	`sdkFieldNameToField()`
`List<SdkField<?>>`	`sdkFields()`
`static Class<? extends Predicate.Builder>`	`serializableBuilderClass()`
`Predicate.Builder`	`toBuilder()`
`String`	`toString()`	Returns a string representation of this object.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface software.amazon.awssdk.utils.builder.ToCopyableBuilder
copy

- Method Detail
  - 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()
```
    Specified by:
    
    toBuilder in interface ToCopyableBuilder<Predicate.Builder,Predicate>
  - 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)
```
    Specified by:
    
    equalsBySdkFields in interface SdkPojo
  - 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
  - sdkFieldNameToField
```
public final Map<String,SdkField<?>> sdkFieldNameToField()
```
    Specified by:
    
    sdkFieldNameToField in interface SdkPojo

Class Predicate

Nested Class Summary

Method Summary

Methods inherited from class java.lang.Object

Methods inherited from interface software.amazon.awssdk.utils.builder.ToCopyableBuilder

Method Detail

hasOr

or

hasAnd

and

field

operator

operand

operandType

toBuilder

builder

serializableBuilderClass

hashCode

equals

equalsBySdkFields

toString

getValueForField

sdkFields

sdkFieldNameToField