org.elasticsearch.join.mapper

Class ParentJoinFieldMapper

java.lang.Object

FieldMapper

org.elasticsearch.join.mapper.ParentJoinFieldMapper

public final class ParentJoinFieldMapper
extends FieldMapper

A FieldMapper that creates hierarchical joins (parent-join) between documents in the same index. Only one parent-join field can be defined per index. The verification of this assumption is done through the MetaJoinFieldMapper which declares a meta field called "_parent_join". This field is only used to ensure that there is a single parent-join field defined in the mapping and cannot be used to index or query any data.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ParentJoinFieldMapper.Builder
static class	ParentJoinFieldMapper.Defaults
static class	ParentJoinFieldMapper.JoinFieldType
static class	ParentJoinFieldMapper.TypeParser

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	CONTENT_TYPE
static java.lang.String	NAME

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ParentJoinFieldMapper(java.lang.String simpleName, MappedFieldType fieldType, Settings indexSettings, MetaJoinFieldMapper uniqueFieldMapper, java.util.List<ParentIdFieldMapper> parentIdFields, boolean eagerGlobalOrdinals)

Method Summary

Modifier and Type	Method and Description
protected ParentJoinFieldMapper	clone()
protected java.lang.String	contentType()
protected void	doMerge(Mapper mergeWith, boolean updateAllTypes)
protected void	doXContentBody(XContentBuilder builder, boolean includeDefaults, Params params)
ParentJoinFieldMapper.JoinFieldType	fieldType()
static ParentJoinFieldMapper	getMapper(MapperService service) Returns the ParentJoinFieldMapper associated with the service or null if there is no parent-join field in this mapping.
ParentIdFieldMapper	getParentIdFieldMapper(java.lang.String name, boolean isParent) Returns the parent Id field mapper associated with a parent name if isParent is true and a child name otherwise.
boolean	hasChild(java.lang.String name) Returns true if name is a child name in the field.
boolean	hasParent(java.lang.String name) Returns true if name is a parent name in the field.
java.util.Iterator<Mapper>	iterator()
void	parse(ParseContext context)
protected void	parseCreateField(ParseContext context, java.util.List<IndexableField> fields)
FieldMapper	updateFieldType(java.util.Map<java.lang.String,MappedFieldType> fullNameToFieldType)

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

CONTENT_TYPE

public static final java.lang.String CONTENT_TYPE

See Also:

Constant Field Values

Constructor Detail

ParentJoinFieldMapper

protected ParentJoinFieldMapper(java.lang.String simpleName,
                                MappedFieldType fieldType,
                                Settings indexSettings,
                                MetaJoinFieldMapper uniqueFieldMapper,
                                java.util.List<ParentIdFieldMapper> parentIdFields,
                                boolean eagerGlobalOrdinals)

Method Detail

getMapper

public static ParentJoinFieldMapper getMapper(MapperService service)

Returns the ParentJoinFieldMapper associated with the service or null if there is no parent-join field in this mapping.

contentType

protected java.lang.String contentType()

clone

protected ParentJoinFieldMapper clone()

fieldType

public ParentJoinFieldMapper.JoinFieldType fieldType()

iterator

public java.util.Iterator<Mapper> iterator()

hasParent

public boolean hasParent(java.lang.String name)

Returns true if name is a parent name in the field.

hasChild

public boolean hasChild(java.lang.String name)

Returns true if name is a child name in the field.

getParentIdFieldMapper

public ParentIdFieldMapper getParentIdFieldMapper(java.lang.String name,
                                                  boolean isParent)

Returns the parent Id field mapper associated with a parent name if isParent is true and a child name otherwise.

doMerge

protected void doMerge(Mapper mergeWith,
                       boolean updateAllTypes)

updateFieldType

public FieldMapper updateFieldType(java.util.Map<java.lang.String,MappedFieldType> fullNameToFieldType)

parseCreateField

protected void parseCreateField(ParseContext context,
                                java.util.List<IndexableField> fields)
                         throws java.io.IOException

Throws:

java.io.IOException

parse

public void parse(ParseContext context)
           throws java.io.IOException

Throws:

java.io.IOException

doXContentBody

protected void doXContentBody(XContentBuilder builder,
                              boolean includeDefaults,
                              Params params)
                       throws java.io.IOException

Throws:

java.io.IOException