Modifier and Type	Class and Description
protected static interface	JoinWalker.AssociationInitCallback
private static class	JoinWalker.AssociationKey Uniquely identifier a foreign key, so that we don't join it more than once, and create circularities

Modifier and Type	Field and Description
protected String[]	aliases
protected final List<E>	associations
protected int[]	collectionOwners
protected CollectionPersister[]	collectionPersisters
protected String[]	collectionSuffixes
private final SessionFactoryImplementor	factory Deprecated as a consequence of `SessionFactoryImplementor` being deprecated.
private final LoadQueryInfluencers	loadQueryInfluencers
protected LockMode[]	lockModeArray
protected LockOptions	lockOptions
protected EntityType[]	ownerAssociationTypes
protected int[]	owners
protected Loadable[]	persisters
protected String	sql
protected String[]	suffixes
private final Set<E>	visitedAssociationKeys

Access	Constructor and Description
protected	JoinWalker(SessionFactoryImplementor factory, LoadQueryInfluencers loadQueryInfluencers) Deprecated as a consequence of `SessionFactoryImplementor` being deprecated.

Method Summary

Modifier and Type	Method and Description
private void	addAssociationToJoinTree(final AssociationType type, final String[] aliasedLhsColumns, final String alias, final PropertyPath path, final int currentDepth, final JoinType joinType) Add on association (one-to-one, many-to-one, or a collection) to a list of associations to be fetched by outerjoin
private void	addAssociationToJoinTreeIfNecessary(final AssociationType type, final String[] aliasedLhsColumns, final String alias, final PropertyPath path, int currentDepth, final JoinType joinType) Add on association (one-to-one, many-to-one, or a collection) to a list of associations to be fetched by outerjoin (if necessary)
protected static int	countCollectionPersisters(List<E> associations) Count the number of instances of Joinable which are actually also instances of PersistentCollection which are being fetched by outer join
protected static int	countEntityPersisters(List<E> associations) Count the number of instances of Joinable which are actually also instances of Loadable, or are one-to-many associations
protected String	generateRootAlias(final String description)
protected String	generateTableAlias(final int n, final PropertyPath path, final Joinable joinable)
public String[]	getAliases()
public List<E>	getAssociations()
public int[]	getCollectionOwners()
public CollectionPersister[]	getCollectionPersisters()
public String[]	getCollectionSuffixes()
protected Dialect	getDialect()
protected SessionFactoryImplementor	getFactory() Deprecated as a consequence of `SessionFactoryImplementor` being deprecated.
protected JoinType	Returns: type of join to use (`org.hibernate.sql.JoinType#INNER_JOIN`, `org.hibernate.sql.JoinType#LEFT_OUTER_JOIN`, or -1 to indicate no joining. getJoinType(OuterJoinLoadable The owner of the association. persister, final PropertyPath The path to the association path, int The property number representing the association. propertyNumber, AssociationType The association type. associationType, FetchMode The metadata-defined fetch mode. metadataFetchMode, CascadeStyle The metadata-defined cascade style. metadataCascadeStyle, String The owner table lhsTable, String[] The owner join columns lhsColumns, final boolean Is the association nullable. nullable, final int Current join depth currentDepth) Determine the appropriate type of join (if any) to use to fetch the given association.
protected JoinType	Returns: type of join to use (`org.hibernate.sql.JoinType#INNER_JOIN`, `org.hibernate.sql.JoinType#LEFT_OUTER_JOIN`, or -1 to indicate no joining. getJoinType(AssociationType The association associationType. associationType, FetchMode The metadata-defined fetch mode. config, PropertyPath The path to the association path, String The owner table lhsTable, String[] The owner join columns lhsColumns, boolean Is the association nullable. nullable, int Current join depth currentDepth, CascadeStyle The metadata-defined cascade style. cascadeStyle) Determine the appropriate associationType of join (if any) to use to fetch the given association.
protected JoinType	getJoinType(boolean nullable, int currentDepth) Use an inner join if it is a non-null association and this is the "first" join in a series
public LoadQueryInfluencers	getLoadQueryInfluencers()
public LockMode[]	getLockModeArray()
public LockOptions	getLockModeOptions()
public EntityType[]	getOwnerAssociationTypes()
public int[]	getOwners()
public Loadable[]	getPersisters()
public String	getSQLString()
public String[]	getSuffixes()
protected String	getWithClause(PropertyPath path)
protected boolean	hasRestriction(PropertyPath path)
protected void	initPersisters(final List<E> associations, final LockMode lockMode)
protected void	initPersisters(final List<E> associations, final LockOptions lockOptions)
protected void	initPersisters(final List<E> associations, final LockOptions lockOptions, final JoinWalker.AssociationInitCallback callback)
protected boolean	isDuplicateAssociation(final String foreignKeyTable, final String[] foreignKeyColumns) Used to detect circularities in the joined graph, note that this method is side-effecty
protected boolean	isDuplicateAssociation(final String lhsTable, final String[] lhsColumnNames, final AssociationType type) Used to detect circularities in the joined graph, note that this method is side-effecty
protected boolean	isJoinable(final JoinType joinType, final Set<E> visitedAssociationKeys, final String lhsTable, final String[] lhsColumnNames, final AssociationType type, final int depth) Should we join this association?
protected boolean	isJoinedFetchEnabled(AssociationType type, FetchMode config, CascadeStyle cascadeStyle) Override on subclasses to enable or suppress joining of certain association types
protected boolean	isJoinedFetchEnabledInMapping(FetchMode config, AssociationType type) Does the mapping, and Hibernate default semantics, specify that this association should be fetched by outer joining
protected boolean	isTooDeep(int currentDepth)
protected boolean	isTooManyCollections()
protected static String	mergeOrderings(String ordering1, String ordering2)
protected final JoinFragment	mergeOuterJoins(List<E> associations) Generate a sequence of `LEFT OUTER JOIN` clauses for the given associations.
protected String	orderBy(final List<E> associations, final String orderBy)
protected static String	orderBy(List<E> associations) Get the order by string required for collection fetching
protected final String	selectString(List<E> associations) Generate a select list of columns containing all properties of the entity classes
public void	setAliases(String[] aliases)
public void	setCollectionOwners(int[] collectionOwners)
public void	setCollectionPersisters(CollectionPersister[] collectionPersisters)
public void	setCollectionSuffixes(String[] collectionSuffixes)
public void	setOwnerAssociationTypes(EntityType[] ownerAssociationType)
public void	setOwners(int[] owners)
public void	setPersisters(Loadable[] persisters)
public void	setSql(String sql)
public void	setSuffixes(String[] suffixes)
protected final void	walkCollectionTree(QueryableCollection persister, String alias) For a collection role, return a list of associations to be fetched by outerjoin
private void	walkCollectionTree(final QueryableCollection persister, final String alias, final PropertyPath path, final int currentDepth) For a collection role, return a list of associations to be fetched by outerjoin
private void	walkComponentTree(final CompositeType The component type to be walked. componentType, final int The property number for the component property (relative to persister). propertyNumber, int todo unknown begin, final OuterJoinLoadable The owner of the component property persister, final String The root alias alias, final PropertyPath The property access path path, final int The current join depth currentDepth) For a component, add to a list of associations to be fetched by outerjoin
private void	walkCompositeElementTree(final CompositeType compositeType, final String[] cols, final QueryableCollection persister, final String alias, final PropertyPath path, final int currentDepth) For a composite element, add to a list of associations to be fetched by outerjoin
private void	walkEntityAssociationTree(final AssociationType The type representing the association to be processed. associationType, final OuterJoinLoadable The owner of the association to be processed. persister, final int The property number for the association (relative to the persister). propertyNumber, final String The entity alias alias, final PropertyPath The path to the association path, final boolean is the association nullable (which I think is supposed to indicate inner/outer join semantics). nullable, final int The current join depth currentDepth) Process a particular association owned by the entity
protected final void	walkEntityTree(OuterJoinLoadable The persister representing the entity to be walked. persister, String The (root) alias to use for this entity/persister. alias) Walk the association tree for an entity, adding associations which should be join fetched to the `associations` inst var.
private void	walkEntityTree(final OuterJoinLoadable The persister representing the entity to be walked. persister, final String The (root) alias to use for this entity/persister. alias, final PropertyPath The property path to the entity being walked path, final int The current join depth currentDepth) Walk the association tree for an entity, adding associations which should be join fetched to the `associations` inst var.
protected StringBuilder	whereString(String alias, String[] columnNames, int batchSize) Render the where condition for a (batch) load by identifier / collection key
protected StringBuilder	whereString(String alias, String[] columnNames, boolean[] valueNullnes, int batchSize)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

aliases	back to summary
protected String[] aliases

associations	back to summary
protected final List<E> associations

collectionOwners	back to summary
protected int[] collectionOwners

collectionPersisters	back to summary
protected CollectionPersister[] collectionPersisters

collectionSuffixes	back to summary
protected String[] collectionSuffixes

factory	back to summary
private final SessionFactoryImplementor factory Deprecated as a consequence of `SessionFactoryImplementor` being deprecated. See corresponding docs for further information.

loadQueryInfluencers	back to summary
private final LoadQueryInfluencers loadQueryInfluencers

lockModeArray	back to summary
protected LockMode[] lockModeArray

lockOptions	back to summary
protected LockOptions lockOptions

ownerAssociationTypes	back to summary
protected EntityType[] ownerAssociationTypes

owners	back to summary
protected int[] owners

persisters	back to summary
protected Loadable[] persisters

sql	back to summary
protected String sql

suffixes	back to summary
protected String[] suffixes

visitedAssociationKeys	back to summary
private final Set<E> visitedAssociationKeys

Constructor Detail

JoinWalker	back to summary
protected JoinWalker(SessionFactoryImplementor factory, LoadQueryInfluencers loadQueryInfluencers) Deprecated as a consequence of `SessionFactoryImplementor` being deprecated. See corresponding docs for further information.

Method Detail

addAssociationToJoinTree	back to summary
private void addAssociationToJoinTree(final AssociationType type, final String[] aliasedLhsColumns, final String alias, final PropertyPath path, final int currentDepth, final JoinType joinType) throws MappingException Add on association (one-to-one, many-to-one, or a collection) to a list of associations to be fetched by outerjoin

addAssociationToJoinTreeIfNecessary	back to summary
private void addAssociationToJoinTreeIfNecessary(final AssociationType type, final String[] aliasedLhsColumns, final String alias, final PropertyPath path, int currentDepth, final JoinType joinType) throws MappingException Add on association (one-to-one, many-to-one, or a collection) to a list of associations to be fetched by outerjoin (if necessary)

countCollectionPersisters	back to summary
protected static int countCollectionPersisters(List<E> associations) throws MappingException Count the number of instances of Joinable which are actually also instances of PersistentCollection which are being fetched by outer join

countEntityPersisters	back to summary
protected static int countEntityPersisters(List<E> associations) throws MappingException Count the number of instances of Joinable which are actually also instances of Loadable, or are one-to-many associations

generateRootAlias	back to summary
protected String generateRootAlias(final String description)

generateTableAlias	back to summary
protected String generateTableAlias(final int n, final PropertyPath path, final Joinable joinable)

getAliases	back to summary
public String[] getAliases()

getAssociations	back to summary
public List<E> getAssociations()

getCollectionOwners	back to summary
public int[] getCollectionOwners()

getCollectionPersisters	back to summary
public CollectionPersister[] getCollectionPersisters()

getCollectionSuffixes	back to summary
public String[] getCollectionSuffixes()

getDialect	back to summary
protected Dialect getDialect()

getFactory	back to summary
protected SessionFactoryImplementor getFactory() Deprecated as a consequence of `SessionFactoryImplementor` being deprecated. See corresponding docs for further information.

getJoinType back to summary

getJoinType	back to summary
protected JoinType getJoinType(OuterJoinLoadable persister, final PropertyPath path, int propertyNumber, AssociationType associationType, FetchMode metadataFetchMode, CascadeStyle metadataCascadeStyle, String lhsTable, String[] lhsColumns, final boolean nullable, final int currentDepth) throws MappingException Determine the appropriate type of join (if any) to use to fetch the given association. Parameters persister:OuterJoinLoadable The owner of the association. path:PropertyPath The path to the association propertyNumber:int The property number representing the association. associationType:AssociationType The association type. metadataFetchMode:FetchMode The metadata-defined fetch mode. metadataCascadeStyle:CascadeStyle The metadata-defined cascade style. lhsTable:String The owner table lhsColumns:String[] The owner join columns nullable:boolean Is the association nullable. currentDepth:int Current join depth Returns:JoinType type of join to use (`org.hibernate.sql.JoinType#INNER_JOIN`, `org.hibernate.sql.JoinType#LEFT_OUTER_JOIN`, or -1 to indicate no joining. Exceptions MappingException: ??

protected JoinType getJoinType(OuterJoinLoadable persister, final PropertyPath path, int propertyNumber, AssociationType associationType, FetchMode metadataFetchMode, CascadeStyle metadataCascadeStyle, String lhsTable, String[] lhsColumns, final boolean nullable, final int currentDepth) throws MappingException

Determine the appropriate type of join (if any) to use to fetch the given association.

Parameters

persister:OuterJoinLoadable: The owner of the association.
path:PropertyPath: The path to the association
propertyNumber:int: The property number representing the association.
associationType:AssociationType: The association type.
metadataFetchMode:FetchMode: The metadata-defined fetch mode.
metadataCascadeStyle:CascadeStyle: The metadata-defined cascade style.
lhsTable:String: The owner table
lhsColumns:String[]: The owner join columns
nullable:boolean: Is the association nullable.
currentDepth:int: Current join depth

Returns:JoinType

type of join to use (org.hibernate.sql.JoinType#INNER_JOIN, org.hibernate.sql.JoinType#LEFT_OUTER_JOIN, or -1 to indicate no joining.

Exceptions

MappingException:: ??

getJoinType back to summary

getJoinType	back to summary
protected JoinType getJoinType(AssociationType associationType, FetchMode config, PropertyPath path, String lhsTable, String[] lhsColumns, boolean nullable, int currentDepth, CascadeStyle cascadeStyle) throws MappingException Determine the appropriate associationType of join (if any) to use to fetch the given association. Parameters associationType:AssociationType The association associationType. config:FetchMode The metadata-defined fetch mode. path:PropertyPath The path to the association lhsTable:String The owner table lhsColumns:String[] The owner join columns nullable:boolean Is the association nullable. currentDepth:int Current join depth cascadeStyle:CascadeStyle The metadata-defined cascade style. Returns:JoinType type of join to use (`org.hibernate.sql.JoinType#INNER_JOIN`, `org.hibernate.sql.JoinType#LEFT_OUTER_JOIN`, or -1 to indicate no joining. Exceptions MappingException: ??

protected JoinType getJoinType(AssociationType associationType, FetchMode config, PropertyPath path, String lhsTable, String[] lhsColumns, boolean nullable, int currentDepth, CascadeStyle cascadeStyle) throws MappingException

Determine the appropriate associationType of join (if any) to use to fetch the given association.

Parameters

associationType:AssociationType: The association associationType.
config:FetchMode: The metadata-defined fetch mode.
path:PropertyPath: The path to the association
lhsTable:String: The owner table
lhsColumns:String[]: The owner join columns
nullable:boolean: Is the association nullable.
currentDepth:int: Current join depth
cascadeStyle:CascadeStyle: The metadata-defined cascade style.

Returns:JoinType

type of join to use (org.hibernate.sql.JoinType#INNER_JOIN, org.hibernate.sql.JoinType#LEFT_OUTER_JOIN, or -1 to indicate no joining.

Exceptions

MappingException:: ??

getJoinType	back to summary
protected JoinType getJoinType(boolean nullable, int currentDepth) Use an inner join if it is a non-null association and this is the "first" join in a series

getLoadQueryInfluencers	back to summary
public LoadQueryInfluencers getLoadQueryInfluencers()

getLockModeArray	back to summary
public LockMode[] getLockModeArray()

getLockModeOptions	back to summary
public LockOptions getLockModeOptions()

getOwnerAssociationTypes	back to summary
public EntityType[] getOwnerAssociationTypes()

getOwners	back to summary
public int[] getOwners()

getPersisters	back to summary
public Loadable[] getPersisters()

getSQLString	back to summary
public String getSQLString()

getSuffixes	back to summary
public String[] getSuffixes()

getWithClause	back to summary
protected String getWithClause(PropertyPath path)

hasRestriction	back to summary
protected boolean hasRestriction(PropertyPath path)

initPersisters	back to summary
protected void initPersisters(final List<E> associations, final LockMode lockMode) throws MappingException

initPersisters	back to summary
protected void initPersisters(final List<E> associations, final LockOptions lockOptions) throws MappingException

initPersisters	back to summary
protected void initPersisters(final List<E> associations, final LockOptions lockOptions, final JoinWalker.AssociationInitCallback callback) throws MappingException

isDuplicateAssociation	back to summary
protected boolean isDuplicateAssociation(final String foreignKeyTable, final String[] foreignKeyColumns) Used to detect circularities in the joined graph, note that this method is side-effecty

isDuplicateAssociation	back to summary
protected boolean isDuplicateAssociation(final String lhsTable, final String[] lhsColumnNames, final AssociationType type) Used to detect circularities in the joined graph, note that this method is side-effecty

isJoinable	back to summary
protected boolean isJoinable(final JoinType joinType, final Set<E> visitedAssociationKeys, final String lhsTable, final String[] lhsColumnNames, final AssociationType type, final int depth) Should we join this association?

isJoinedFetchEnabled	back to summary
protected boolean isJoinedFetchEnabled(AssociationType type, FetchMode config, CascadeStyle cascadeStyle) Override on subclasses to enable or suppress joining of certain association types

isJoinedFetchEnabledInMapping	back to summary
protected boolean isJoinedFetchEnabledInMapping(FetchMode config, AssociationType type) throws MappingException Does the mapping, and Hibernate default semantics, specify that this association should be fetched by outer joining

isTooDeep	back to summary
protected boolean isTooDeep(int currentDepth)

isTooManyCollections	back to summary
protected boolean isTooManyCollections()

mergeOrderings	back to summary
protected static String mergeOrderings(String ordering1, String ordering2)

mergeOuterJoins	back to summary
protected final JoinFragment mergeOuterJoins(List<E> associations) throws MappingException Generate a sequence of `LEFT OUTER JOIN` clauses for the given associations.

orderBy	back to summary
protected String orderBy(final List<E> associations, final String orderBy)

orderBy	back to summary
protected static String orderBy(List<E> associations) throws MappingException Get the order by string required for collection fetching

selectString	back to summary
protected final String selectString(List<E> associations) throws MappingException Generate a select list of columns containing all properties of the entity classes

setAliases	back to summary
public void setAliases(String[] aliases)

setCollectionOwners	back to summary
public void setCollectionOwners(int[] collectionOwners)

setCollectionPersisters	back to summary
public void setCollectionPersisters(CollectionPersister[] collectionPersisters)

setCollectionSuffixes	back to summary
public void setCollectionSuffixes(String[] collectionSuffixes)

setOwnerAssociationTypes	back to summary
public void setOwnerAssociationTypes(EntityType[] ownerAssociationType)

setOwners	back to summary
public void setOwners(int[] owners)

setPersisters	back to summary
public void setPersisters(Loadable[] persisters)

setSql	back to summary
public void setSql(String sql)

setSuffixes	back to summary
public void setSuffixes(String[] suffixes)

walkCollectionTree	back to summary
protected final void walkCollectionTree(QueryableCollection persister, String alias) throws MappingException For a collection role, return a list of associations to be fetched by outerjoin

walkCollectionTree	back to summary
private void walkCollectionTree(final QueryableCollection persister, final String alias, final PropertyPath path, final int currentDepth) throws MappingException For a collection role, return a list of associations to be fetched by outerjoin

walkComponentTree

back to summary

private void walkComponentTree(final CompositeType componentType, final int propertyNumber, int begin, final OuterJoinLoadable persister, final String alias, final PropertyPath path, final int currentDepth) throws MappingException

For a component, add to a list of associations to be fetched by outerjoin

Parameters

componentType:CompositeType: The component type to be walked.
propertyNumber:int: The property number for the component property (relative to persister).
begin:int: todo unknown
persister:OuterJoinLoadable: The owner of the component property
alias:String: The root alias
path:PropertyPath: The property access path
currentDepth:int: The current join depth

Exceptions

MappingException:: ???

walkCompositeElementTree	back to summary
private void walkCompositeElementTree(final CompositeType compositeType, final String[] cols, final QueryableCollection persister, final String alias, final PropertyPath path, final int currentDepth) throws MappingException For a composite element, add to a list of associations to be fetched by outerjoin

walkEntityAssociationTree

back to summary

private void walkEntityAssociationTree(final AssociationType associationType, final OuterJoinLoadable persister, final int propertyNumber, final String alias, final PropertyPath path, final boolean nullable, final int currentDepth) throws MappingException

Process a particular association owned by the entity

Parameters

associationType:AssociationType: The type representing the association to be processed.
persister:OuterJoinLoadable: The owner of the association to be processed.
propertyNumber:int: The property number for the association (relative to the persister).
alias:String: The entity alias
path:PropertyPath: The path to the association
nullable:boolean: is the association nullable (which I think is supposed to indicate inner/outer join semantics).
currentDepth:int: The current join depth

Exceptions

MappingException:: ???

walkEntityTree back to summary

protected final void walkEntityTree(OuterJoinLoadable persister, String alias) throws MappingException

Walk the association tree for an entity, adding associations which should be join fetched to the associations inst var. This form is the entry point into the walking for a given entity, starting the recursive calls into walkEntityTree(org.hibernate.persister.entity.OuterJoinLoadable, String, PropertyPath, int).

Parameters

persister:OuterJoinLoadable: The persister representing the entity to be walked.
alias:String: The (root) alias to use for this entity/persister.

Exceptions

MappingException:: ???

walkEntityTree back to summary

private void walkEntityTree(final OuterJoinLoadable persister, final String alias, final PropertyPath path, final int currentDepth) throws MappingException

Parameters

persister:OuterJoinLoadable: The persister representing the entity to be walked.
alias:String: The (root) alias to use for this entity/persister.
path:PropertyPath: The property path to the entity being walked
currentDepth:int: The current join depth

Exceptions

MappingException:: ???

whereString	back to summary
protected StringBuilder whereString(String alias, String[] columnNames, int batchSize) Render the where condition for a (batch) load by identifier / collection key

whereString	back to summary
protected StringBuilder whereString(String alias, String[] columnNames, boolean[] valueNullnes, int batchSize)

org.hibernate.loader back to summary

protected Interface JoinWalker.AssociationInitCallback

Known Direct Implementers: org.hibernate.loader.entity.EntityJoinWalker.AssociationInitCallbackImpl

Field Summary

Modifier and Type	Field and Description
public static final JoinWalker.AssociationInitCallback	NO_CALLBACK

Method Summary

Modifier and Type	Method and Description
public void	associationProcessed(OuterJoinableAssociation oja, int position)

Field Detail

NO_CALLBACK	back to summary
public static final JoinWalker.AssociationInitCallback NO_CALLBACK

Method Detail

associationProcessed	back to summary
public void associationProcessed(OuterJoinableAssociation oja, int position)

org.hibernate.loader back to summary

private final Class JoinWalker.AssociationKey

Class Inheritance

extends Object

java.lang.Object
org.hibernate.loader.JoinWalker.AssociationKey

Uniquely identifier a foreign key, so that we don't join it more than once, and create circularities

Field Summary

Modifier and Type	Field and Description
private String[]	columns
private String	table

Constructor Summary

Access	Constructor and Description
private	AssociationKey(String[] columns, String table)

Method Summary

Modifier and Type	Method and Description
public boolean	equals(Object the reference object with which to compare. other) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for the object.

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll toString wait wait wait

Field Detail

columns	back to summary
private String[] columns

table	back to summary
private String table

Constructor Detail

AssociationKey	back to summary
private AssociationKey(String[] columns, String table)

Method Detail

equals back to summary

public boolean equals(Object other)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters

other:Object: the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations

@Override

hashCode back to summary

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Returns:int

a hash code value for this object.

Annotations

@Override

public Class JoinWalker

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

protected Interface JoinWalker.AssociationInitCallback

Field Summary

Method Summary

Field Detail

Method Detail

private final Class JoinWalker.AssociationKey

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail