Java Doc for ImportedKeyConstraint.java in  » Database-DBMS » Quadcap-Embeddable-Database » com » quadcap » sql » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » Quadcap Embeddable Database » com.quadcap.sql   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    com.quadcap.sql.Constraint       com.quadcap.sql.ForeignKeyConstraint          com.quadcap.sql.ImportedKeyConstraint ImportedKeyConstraint public class ImportedKeyConstraint extends ForeignKeyConstraint implements Externalizable(Code) Constraint for imported keys (i.e., this table references another table) author:    Stan Bailes Field Summary transient  ExportedKeyConstraint ec      transient  Btree fIndex      transient  Btree index       long indexRoot      Constructor Summary public   ImportedKeyConstraint()      public   ImportedKeyConstraint(String name, String fTableName)      Explicit constructor parser. public   ImportedKeyConstraint(String name, Vector colNames, String fTableName, Vector fColNames)      Method Summary public  void add(Session session)      For ALTER TABLE ADD CONSTRAINT, we need to build our foreign index. public  void applyDelete(Session session, Row row, long rowId, Constraint activeIndex)      On delete, remove the constraints holding the corresponding row values. public  void applyInsert(Session session, Row row, long rowId, Constraint activeIndex)      public  void checkInsert(Session session, Row row)      On insert, verify that the referenced keys exist in the foreign table.  boolean checkSelfReferencing(Row row)      Check for the possibility that a row satisfies its own constraints. public  void checkUpdate(Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex)      On update, if the imported key changes, we need to modify the index. public  void delete(Session session)      On ALTER TABLE DROP CONSTRAINT, delete the index and free the file resources it holds. public  ExportedKeyConstraint findExportedKeyConstraint(Database db)      Get the export constraint if it exists already. final  String getExportConstraintName()      Return a name for the auto-generated 'export' constraint. final  Btree getForeignIndex(Session session)      Get (create if necessary) the Btree for the foreign index. public  Btree getIndex(Database db)      Get the index (create it if necessary).  byte[] makeKey(Session session, Row row, long rowId)      For the purposes of creating a unique key, the rowId is included, whereas for purposes of checking foreign key integrity, the rowId is ignored, only the key value matters. public  void readExternal(ObjectInput in)      public  void writeExternal(ObjectOutput out)      Field Detail ec transient ExportedKeyConstraint ec(Code) fIndex transient Btree fIndex(Code) index transient Btree index(Code) indexRoot long indexRoot(Code) Constructor Detail ImportedKeyConstraint public ImportedKeyConstraint()(Code) Default constructor required for serialization ImportedKeyConstraint public ImportedKeyConstraint(String name, String fTableName)(Code) Explicit constructor parser. ImportedKeyConstraint public ImportedKeyConstraint(String name, Vector colNames, String fTableName, Vector fColNames)(Code) Explicit constructor with named columns Method Detail add public void add(Session session) throws SQLException, IOException(Code) For ALTER TABLE ADD CONSTRAINT, we need to build our foreign index. applyDelete public void applyDelete(Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException(Code) On delete, remove the constraints holding the corresponding row values. applyInsert public void applyInsert(Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException(Code) On insert, add the new 'export' constraint value checkInsert public void checkInsert(Session session, Row row) throws SQLException, IOException(Code) On insert, verify that the referenced keys exist in the foreign table. checkSelfReferencing boolean checkSelfReferencing(Row row) throws SQLException(Code) Check for the possibility that a row satisfies its own constraints. It's a strange world we live in, get used to it. checkUpdate public void checkUpdate(Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex) throws SQLException, IOException(Code) On update, if the imported key changes, we need to modify the index. Once this happens, we create a session context in which to record the index changes so we can do them all together, at the end. delete public void delete(Session session) throws SQLException, IOException(Code) On ALTER TABLE DROP CONSTRAINT, delete the index and free the file resources it holds. findExportedKeyConstraint public ExportedKeyConstraint findExportedKeyConstraint(Database db) throws IOException, SQLException(Code) Get the export constraint if it exists already. getExportConstraintName final String getExportConstraintName()(Code) Return a name for the auto-generated 'export' constraint. getForeignIndex final Btree getForeignIndex(Session session) throws SQLException, IOException(Code) Get (create if necessary) the Btree for the foreign index. getIndex public Btree getIndex(Database db) throws IOException(Code) Get the index (create it if necessary). The key for this index includes the actual key fields plus the row id to ensure uniqueness for Btreee operations. Some operations require that we use a special comparator which ignores the rowId part. makeKey byte[] makeKey(Session session, Row row, long rowId) throws SQLException(Code) For the purposes of creating a unique key, the rowId is included, whereas for purposes of checking foreign key integrity, the rowId is ignored, only the key value matters. readExternal public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code) Externalizable: read me from a stream writeExternal public void writeExternal(ObjectOutput out) throws IOException(Code) Externalizable: write me to a stream Fields inherited from com.quadcap.sql.ForeignKeyConstraint transient Comparator compare(Code)(Java Doc) Vector fColNames(Code)(Java Doc) int[] fCols(Code)(Java Doc) UniqueConstraint fConstraint(Code)(Java Doc) Table fTable(Code)(Java Doc) String fTableName(Code)(Java Doc) Methods inherited from com.quadcap.sql.ForeignKeyConstraint public void add(Session session) throws SQLException, IOException(Code)(Java Doc) public void applyDelete(Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) public void applyInsert(Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) public void applyUpdate(Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) public void checkDelete(Session session, Row row, long rowId) throws SQLException, IOException(Code)(Java Doc) public void checkInsert(Session session, Row row) throws SQLException, IOException(Code)(Java Doc) public void checkUpdate(Session session, Row row, long rowId) throws SQLException, IOException(Code)(Java Doc) abstract public void delete(Session session) throws SQLException, IOException(Code)(Java Doc) final Comparator getComparator() throws SQLException(Code)(Java Doc) public int[] getFCols(Database db) throws SQLException, IOException(Code)(Java Doc) public Table getFTable(Database db) throws SQLException, IOException(Code)(Java Doc) public String getFTableName()(Code)(Java Doc) final public boolean isDeferred()(Code)(Java Doc) boolean isSelfReferencing(Database db) throws IOException, SQLException(Code)(Java Doc) public byte[] makeFKey(Session session, Row row) throws IOException, SQLException(Code)(Java Doc) public byte[] makeKey(Session session, Row row) throws SQLException(Code)(Java Doc) public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code)(Java Doc) public void resetColumns() throws SQLException(Code)(Java Doc) public void setFTableName(String s)(Code)(Java Doc) public void setForeignColumn(String name)(Code)(Java Doc) public String toString()(Code)(Java Doc) public void writeExternal(ObjectOutput out) throws IOException(Code)(Java Doc) Fields inherited from com.quadcap.sql.Constraint final public static int CASCADE(Code)(Java Doc) final public static int DEFERRABLE(Code)(Java Doc) final public static int DELETE(Code)(Java Doc) final public static int FULL(Code)(Java Doc) final public static int GLOBAL(Code)(Java Doc) final public static int INIT_DEFERRED(Code)(Java Doc) final public static int NOACTION(Code)(Java Doc) final public static int PARTIAL(Code)(Java Doc) final public static int SETDEFAULT(Code)(Java Doc) final public static int SETNULL(Code)(Java Doc) final public static int UPDATE(Code)(Java Doc) Vector colNames(Code)(Java Doc) transient int[] columns(Code)(Java Doc) String name(Code)(Java Doc) static String[] refActions(Code)(Java Doc) int spec(Code)(Java Doc) transient Table table(Code)(Java Doc) Methods inherited from com.quadcap.sql.Constraint abstract public void add(Session session) throws SQLException, IOException(Code)(Java Doc) abstract public void applyDelete(Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) abstract public void applyInsert(Session session, Row row, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) abstract public void applyUpdate(Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) abstract public void checkDelete(Session session, Row row, long rowId) throws SQLException, IOException(Code)(Java Doc) abstract public void checkInsert(Session session, Row row) throws SQLException, IOException(Code)(Java Doc) abstract public void checkUpdate(Session session, byte[] oldKey, Row row, Row oldRow, long rowId, Constraint activeIndex) throws SQLException, IOException(Code)(Java Doc) abstract public void delete(Session session) throws SQLException, IOException(Code)(Java Doc) public Column getColumn() throws SQLException(Code)(Java Doc) public Column getColumn(int c) throws SQLException(Code)(Java Doc) public int getColumnCount()(Code)(Java Doc) public Vector getColumnNames() throws SQLException(Code)(Java Doc) public int[] getColumns() throws SQLException(Code)(Java Doc) public Btree getIndex(Database db) throws IOException(Code)(Java Doc) public String getName()(Code)(Java Doc) public int getPriority()(Code)(Java Doc) public int getRefAction(int opType)(Code)(Java Doc) public String getRefActionString(int opType)(Code)(Java Doc) public int getSpec()(Code)(Java Doc) public Table getTable()(Code)(Java Doc) public boolean isDeferred()(Code)(Java Doc) public boolean isGlobal()(Code)(Java Doc) public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code)(Java Doc) public void resetColumns() throws SQLException(Code)(Java Doc) public void setColumn(Column column)(Code)(Java Doc) public void setDeferrable(int def)(Code)(Java Doc) public void setGlobal(boolean g)(Code)(Java Doc) public void setName(String name)(Code)(Java Doc) public void setRefSpec(int ref)(Code)(Java Doc) public void setTable(Table table) throws SQLException(Code)(Java Doc) public String toString()(Code)(Java Doc) public void undoAdd(Session session) throws SQLException, IOException(Code)(Java Doc) public void undoDelete(Session session) throws SQLException, IOException(Code)(Java Doc) public void writeExternal(ObjectOutput out) throws IOException(Code)(Java Doc) Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)