Package com.datastax.astra.client.model

Class Filter

java.lang.Object

com.datastax.astra.client.model.Document

com.datastax.astra.client.model.Filter

All Implemented Interfaces:

Serializable, Map<String,Object>

public class Filter
extends Document

Filter Builder.

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields inherited from class com.datastax.astra.client.model.Document

documentMap

Constructor Summary

Constructors

Constructor	Description
Filter()	Default constructor.
Filter(@NonNull String fieldName, @NonNull FilterOperator cond, @NonNull Object value)	Create a filter from a where clause.

Method Summary

Modifier and Type	Method	Description
static Filter	findById(String id)	Build a filter for find by id.
String	toJson()	Express the json filter as a string.
String	toString()	Serialization with Jackson.
FilterBuilder	where(String fieldName)	Work with arguments.
Filter	where(String fieldName, FilterOperator cond, Object value)	Build where clause with operator

Methods inherited from class com.datastax.astra.client.model.Document

append, appendIfNotNull, clear, containsKey, containsValue, create, create, entrySet, equals, get, get, getArray, getBoolean, getByte, getCalendar, getCharacter, getDate, getDate, getDouble, getFloat, getId, getInstant, getInteger, getList, getList, getLong, getObjectId, getShort, getSimilarity, getString, getUUID, getVector, getVectorize, hashCode, id, isEmpty, keySet, map, parse, put, putAll, remove, size, values, vector, vectorize

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

Filter

public Filter()

Default constructor.

Filter

public Filter(@NonNull
 @NonNull String fieldName,
 @NonNull
 @NonNull FilterOperator cond,
 @NonNull
 @NonNull Object value)

Create a filter from a where clause.

Parameters:

fieldName - fieldName

cond - condition

value - object value

Method Details

where

public FilterBuilder where(String fieldName)

Work with arguments.

Parameters:

fieldName - current field name.

Returns:

builder for the filter

where

public Filter where(String fieldName,
 FilterOperator cond,
 Object value)

Build where clause with operator

Parameters:

fieldName - current field name

cond - current condition

value - value for the condition

Returns:

current

findById

public static Filter findById(String id)

Build a filter for find by id.

Parameters:

id - identifier

Returns:

filter

toString

public String toString()

Serialization with Jackson.

Overrides:

toString in class Document

Returns:

json string

toJson

public String toJson()

Express the json filter as a string.

Overrides:

toJson in class Document

Returns:

json expression