org.apache.openjpa.jdbc.schema
Class SchemaGroup

java.lang.Object
  org.apache.openjpa.jdbc.schema.NameSet
      org.apache.openjpa.jdbc.schema.SchemaGroup

All Implemented Interfaces:

Cloneable

Direct Known Subclasses:

DynamicSchemaFactory, LazySchemaFactory

public class SchemaGroup
extends NameSet
implements Cloneable

Represents a grouping of schemas used in a database.

Author:

Abe White

Constructor Summary

SchemaGroup()

Method Summary

Schema	addSchema() Add a schema to the group.
Schema	addSchema(String name) Add a schema to the group.
Object	clone()
protected void	copy(SchemaGroup group) Copy cloneable state from the given instance.
ForeignKey[]	findExportedForeignKeys(PrimaryKey pk) Find all foreign keys exported by a given primary key (all foreign keys that link to the primary key).
Sequence	findSequence(Sequence seq) Find the equivalent of the given sequence in this schema group.
Sequence	findSequence(String name) Find the sequence with the given name in the group, using '.' as the catalog separator.
Table	findTable(String name) Find the table with the given name in the group, using '.' as the catalog separator.
Table	findTable(Table table) Find the equivalent of the given table in this schema group.
Schema	getSchema(String name) Return the schema with the given name, or null if none.
Schema[]	getSchemas() Return all schemas.
Schema	importSchema(Schema schema) Import a schema from another group.
boolean	isKnownSequence(Sequence seq) Return true if the given sequence is known to exist.
boolean	isKnownSequence(String name) Return true if the given sequence is known to exist.
boolean	isKnownTable(String name) Return true if the given table is known to exist.
boolean	isKnownTable(Table table) Return true if the given table is known to exist.
protected Column	newColumn(String name, Table table) Return a new column with the given name and owner table.
protected ForeignKey	newForeignKey(String name, Table table) Return a new foreign key with the given name and owner table.
protected Index	newIndex(String name, Table table) Return a new index with the given name and owner table.
protected SchemaGroup	newInstance() Create a new instance of this class.
protected PrimaryKey	newPrimaryKey(String name, Table table) Return a new primary key with the given name and owner table.
protected Schema	newSchema(String name) Return a new schema with the given name.
protected Sequence	newSequence(String name, Schema schema) Return a new sequence with the given name and owner schema.
protected Table	newTable(String name, Schema schema) Return a new table with the given name and owner schema.
protected Unique	newUnique(String name, Table table) Return a new unique constraint with the given name and owner table.
boolean	removeSchema(Schema schema) Remove the given schema from the group.
void	removeUnusedComponents() Remove unreferenced or emtpy components from the schema.

Methods inherited from class org.apache.openjpa.jdbc.schema.NameSet

addName, isNameTaken, removeName

Methods inherited from class java.lang.Object

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

Constructor Detail

SchemaGroup

public SchemaGroup()

Method Detail

getSchemas

public Schema[] getSchemas()

Return all schemas.

getSchema

public Schema getSchema(String name)

Return the schema with the given name, or null if none.

addSchema

public Schema addSchema()

Add a schema to the group.

addSchema

public Schema addSchema(String name)

Add a schema to the group.

removeSchema

public boolean removeSchema(Schema schema)

Remove the given schema from the group.

Returns:

true if the schema was removed, false if not in the group

importSchema

public Schema importSchema(Schema schema)

Import a schema from another group. Foreign keys are not imported.

isKnownTable

public boolean isKnownTable(Table table)

Return true if the given table is known to exist. While findTable(org.apache.openjpa.jdbc.schema.Table) may exhibit dynamic behavior in some schema group implementations, this method only returns true if the table has been added to this group or is known to exist in the database.

isKnownTable

public boolean isKnownTable(String name)

Return true if the given table is known to exist. While findTable(org.apache.openjpa.jdbc.schema.Table) may exhibit dynamic behavior in some schema group implementations, this method only returns true if the table has been added to this group or is known to exist in the database.

findTable

public Table findTable(Table table)

Find the equivalent of the given table in this schema group. The given table that may have come from another schema group.

findTable

public Table findTable(String name)

Find the table with the given name in the group, using '.' as the catalog separator. Returns null if no table found.

isKnownSequence

public boolean isKnownSequence(Sequence seq)

Return true if the given sequence is known to exist. While findSequence(org.apache.openjpa.jdbc.schema.Sequence) may exhibit dynamic behavior in some schema group implementations, this method only returns true if the sequence has been added to this group or is known to exist in the database.

isKnownSequence

public boolean isKnownSequence(String name)

Return true if the given sequence is known to exist. While findSequence(org.apache.openjpa.jdbc.schema.Sequence) may exhibit dynamic behavior in some schema group implementations, this method only returns true if the sequence has been added to this group or is known to exist in the database.

findSequence

public Sequence findSequence(Sequence seq)

Find the equivalent of the given sequence in this schema group. The given sequence that may have come from another schema group.

findSequence

public Sequence findSequence(String name)

Find the sequence with the given name in the group, using '.' as the catalog separator. Returns null if no sequence found.

findExportedForeignKeys

public ForeignKey[] findExportedForeignKeys(PrimaryKey pk)

Find all foreign keys exported by a given primary key (all foreign keys that link to the primary key).

removeUnusedComponents

public void removeUnusedComponents()

Remove unreferenced or emtpy components from the schema.

clone

public Object clone()

Overrides:

clone in class Object

newInstance

protected SchemaGroup newInstance()

Create a new instance of this class.

copy

protected void copy(SchemaGroup group)

Copy cloneable state from the given instance.

newSchema

protected Schema newSchema(String name)

Return a new schema with the given name.

newSequence

protected Sequence newSequence(String name,
                               Schema schema)

Return a new sequence with the given name and owner schema.

newTable

protected Table newTable(String name,
                         Schema schema)

Return a new table with the given name and owner schema.

newColumn

protected Column newColumn(String name,
                           Table table)

Return a new column with the given name and owner table.

newPrimaryKey

protected PrimaryKey newPrimaryKey(String name,
                                   Table table)

Return a new primary key with the given name and owner table.

newIndex

protected Index newIndex(String name,
                         Table table)

Return a new index with the given name and owner table.

newUnique

protected Unique newUnique(String name,
                           Table table)

Return a new unique constraint with the given name and owner table.

newForeignKey

protected ForeignKey newForeignKey(String name,
                                   Table table)

Return a new foreign key with the given name and owner table.