Java Doc for JoinInnerCursor.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.TupleImpl       com.quadcap.sql.CursorImpl          com.quadcap.sql.JoinCursor             com.quadcap.sql.JoinInnerCursor JoinInnerCursor public class JoinInnerCursor extends JoinCursor (Code) Cursor implementing INNER JOIN using nested loops (optimized using the inner index) author:    Stan Bailes Field Summary  int[] caCols      The join columns in the outer table.  byte[] caKey      The current join key.  int[] caMap       int cbCnt      Cache number of columns in inner table.  int[] cbCols      The join columns in the inner table.  IndexConstraint cbIndex       BCursor cbKeys       int[] cbMap       Table cbTable      If the inner is really a table, or null if it's a view.  Comparator compare      Used to compare the inner and outer join keys.  Database db       BlockFile file       Btree index      Either the index from above, or a temporary one we create.  MapRow mapRow       boolean mustFreeRows       BlockFile tempFile       boolean tempIndex      Constructor Summary public   JoinInnerCursor(Session session, Cursor outer, Cursor ca, int[] caCols, Cursor cb, int[] cbCols, Expression where, Tuple tuple, JoinMapRow row, boolean left, boolean inner)      Constructor takes a whole shitload of parameters. Method Summary protected  void bfirst()      final protected  boolean bnext()      public  void close()      final  IndexConstraint findIndex(Cursor r, int[] cols)      public  void freeRows(Btree index, BlockFile file)      final static  BitSet intArrayToBitSet(int[] a)      final  Btree makeInnerIndex()      final  byte[] makeInnerKey(Cursor cursor, Row row, long rowId)      final  byte[] makeOuterKey(Cursor cursor, Row row)      final  void makeTemporaryIndexForTable()      final  void makeTemporaryIndexForView()      Field Detail caCols int[] caCols(Code) The join columns in the outer table. caKey byte[] caKey(Code) The current join key. caMap int[] caMap(Code) Map outer columns from join cursor to outer cursor pos cbCnt int cbCnt(Code) Cache number of columns in inner table. cbCols int[] cbCols(Code) The join columns in the inner table. cbIndex IndexConstraint cbIndex(Code) If there's an index on the join columns of the inner table cbKeys BCursor cbKeys(Code) cbMap int[] cbMap(Code) Map inner, non-join-key columns from join cursor to inner cursor pos cbTable Table cbTable(Code) If the inner is really a table, or null if it's a view. compare Comparator compare(Code) Used to compare the inner and outer join keys. db Database db(Code) file BlockFile file(Code) index Btree index(Code) Either the index from above, or a temporary one we create. mapRow MapRow mapRow(Code) Temporary used to build keys for inner table index mustFreeRows boolean mustFreeRows(Code) Did we make create new (temporary) rows for the inner index? tempFile BlockFile tempFile(Code) tempIndex boolean tempIndex(Code) Did we make 'index', or were the columns already indexed? Constructor Detail JoinInnerCursor public JoinInnerCursor(Session session, Cursor outer, Cursor ca, int[] caCols, Cursor cb, int[] cbCols, Expression where, Tuple tuple, JoinMapRow row, boolean left, boolean inner) throws SQLException(Code) Constructor takes a whole shitload of parameters. Parameters:   session - my execution session context (transaction, etc) Parameters:   ca - the outer join cursor Parameters:   caCols - the join columns in the outer cursor Parameters:   cb - the inner join cursor Parameters:   cbCols - the join columns in the inner cursor Parameters:   where - the ON/WHERE predicate expression Parameters:   tuple - the format we're supposed to return Parameters:   row - A mapping between the inner/outer rows and the join row Parameters:   left - Include non-matching outer rows with nulls for inner Parameters:   inner - Include matching rows Parameters:   flip - Left is Right, Right is Left Method Detail bfirst protected void bfirst() throws SQLException(Code) bnext final protected boolean bnext() throws SQLException(Code) close public void close() throws SQLException(Code) findIndex final IndexConstraint findIndex(Cursor r, int[] cols) throws SQLException(Code) freeRows public void freeRows(Btree index, BlockFile file) throws IOException(Code) intArrayToBitSet final static BitSet intArrayToBitSet(int[] a)(Code) makeInnerIndex final Btree makeInnerIndex() throws IOException, SQLException(Code) makeInnerKey final byte[] makeInnerKey(Cursor cursor, Row row, long rowId) throws IOException, SQLException(Code) makeOuterKey final byte[] makeOuterKey(Cursor cursor, Row row) throws IOException, SQLException(Code) makeTemporaryIndexForTable final void makeTemporaryIndexForTable() throws IOException, SQLException(Code) makeTemporaryIndexForView final void makeTemporaryIndexForView() throws IOException, SQLException(Code) Fields inherited from com.quadcap.sql.JoinCursor Expression aWhere(Code)(Java Doc) Cursor ca(Code)(Java Doc) Cursor cb(Code)(Java Doc) boolean inner(Code)(Java Doc) boolean left(Code)(Java Doc) Row ra(Code)(Java Doc) Row rb(Code)(Java Doc) JoinMapRow row(Code)(Java Doc) Expression where(Code)(Java Doc) Methods inherited from com.quadcap.sql.JoinCursor public void afterLast() throws SQLException(Code)(Java Doc) protected boolean anext() throws SQLException(Code)(Java Doc) public void beforeFirst() throws SQLException(Code)(Java Doc) protected void bfirst() throws SQLException(Code)(Java Doc) protected boolean bnext() throws SQLException(Code)(Java Doc) public void close() throws SQLException(Code)(Java Doc) public void deleteRow() throws SQLException(Code)(Java Doc) public Row getRow()(Code)(Java Doc) public boolean isWritable(int column)(Code)(Java Doc) public boolean next() throws SQLException(Code)(Java Doc) final boolean passRow(Cursor c, Expression w) throws SQLException(Code)(Java Doc) public long size() throws SQLException(Code)(Java Doc) public void updateRow(Row row) throws SQLException(Code)(Java Doc) Fields inherited from com.quadcap.sql.CursorImpl protected Cursor outer(Code)(Java Doc) protected Session session(Code)(Java Doc) Methods inherited from com.quadcap.sql.CursorImpl public boolean absolute(int row) throws SQLException(Code)(Java Doc) abstract public void afterLast() throws SQLException(Code)(Java Doc) abstract public void beforeFirst() throws SQLException(Code)(Java Doc) abstract public void close() throws SQLException(Code)(Java Doc) abstract public void deleteRow() throws SQLException(Code)(Java Doc) static void dumpCursor(String label, Cursor c) throws SQLException(Code)(Java Doc) public void finalize() throws Throwable(Code)(Java Doc) public Column getColumn(String columnName) throws SQLException(Code)(Java Doc) public Cursor getOuterCursor()(Code)(Java Doc) abstract public Row getRow() throws SQLException(Code)(Java Doc) public long getRowId()(Code)(Java Doc) public Session getSession()(Code)(Java Doc) public Table getTable()(Code)(Java Doc) public void insertRow(Row row) throws SQLException(Code)(Java Doc) abstract public boolean isWritable(int column) throws SQLException(Code)(Java Doc) abstract public boolean next() throws SQLException(Code)(Java Doc) public boolean prev() throws SQLException(Code)(Java Doc) public void reset(Expression expr, Cursor outer) throws SQLException(Code)(Java Doc) public void setOuterCursor(Cursor c)(Code)(Java Doc) public String toString()(Code)(Java Doc) abstract public void updateRow(Row row) throws SQLException(Code)(Java Doc) Fields inherited from com.quadcap.sql.TupleImpl protected Vector columns(Code)(Java Doc) protected HashMap names(Code)(Java Doc) protected String qual(Code)(Java Doc) protected String qualifier(Code)(Java Doc) Methods inherited from com.quadcap.sql.TupleImpl public void addColumn(Column col) throws SQLException(Code)(Java Doc) public void addColumn(Column col, int pos) throws SQLException(Code)(Java Doc) public void addColumn(String name, Type type) throws SQLException(Code)(Java Doc) public void addColumns(Session session, Tuple t) throws SQLException(Code)(Java Doc) public void addColumns(Session session, Tuple t, boolean resolve) throws SQLException(Code)(Java Doc) public void deleteColumn(int col) throws SQLException, IOException(Code)(Java Doc) public Column getColumn(int i) throws SQLException(Code)(Java Doc) public Column getColumn(String name) throws SQLException(Code)(Java Doc) public int getColumnCount() throws SQLException(Code)(Java Doc) public int getColumnIndex(String name) throws SQLException(Code)(Java Doc) public String getName()(Code)(Java Doc) public int[] mapColumns(Vector names) throws SQLException(Code)(Java Doc) static int nextUnquotedPeriod(String s)(Code)(Java Doc) public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException(Code)(Java Doc) public void resolveColumns() throws SQLException(Code)(Java Doc) public void setName(String name)(Code)(Java Doc) public String toString()(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)