Java Doc for UnionResultSet.java in  » Database-DBMS » db-derby-10.2 » org » apache » derby » impl » sql » execute » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » db derby 10.2 » org.apache.derby.impl.sql.execute   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl       org.apache.derby.impl.sql.execute.NoPutResultSetImpl          org.apache.derby.impl.sql.execute.UnionResultSet UnionResultSet class UnionResultSet extends NoPutResultSetImpl implements CursorResultSet(Code) Takes two result sets and returns their union (all). (Any duplicate elimination is performed above this ResultSet.) author:    ames Field Summary public  int rowsReturned      public  int rowsSeenLeft      public  int rowsSeenRight      public  NoPutResultSet source1      public  NoPutResultSet source2      Constructor Summary public   UnionResultSet(NoPutResultSet source1, NoPutResultSet source2, Activation activation, int resultSetNumber, double optimizerEstimatedRowCount, double optimizerEstimatedCost)      Method Summary public  void close()      If the result set has been opened, close the currently open source. public  void finish()      public  ExecRow getCurrentRow()      A union has a single underlying row at a time, although from one of several sources. public  ExecRow getNextRowCore()      If there are rows still on the first source, return the next one; otherwise, switch to the second source and return a row from there. public  ResultDescription getResultDescription()      Returns the description of the first source. public  RowLocation getRowLocation()      A union has a single underlying row at a time, although from one of several sources. public  long getTimeSpent(int type)      Return the total amount of time spent in this ResultSet Parameters:   type - CURRENT_RESULTSET_ONLY - time spent only in this ResultSetENTIRE_RESULTSET_TREE - time spent in this ResultSet and below. public  void openCore()      open the first source. Field Detail rowsReturned public int rowsReturned(Code) rowsSeenLeft public int rowsSeenLeft(Code) rowsSeenRight public int rowsSeenRight(Code) source1 public NoPutResultSet source1(Code) source2 public NoPutResultSet source2(Code) Constructor Detail UnionResultSet public UnionResultSet(NoPutResultSet source1, NoPutResultSet source2, Activation activation, int resultSetNumber, double optimizerEstimatedRowCount, double optimizerEstimatedCost)(Code) Method Detail close public void close() throws StandardException(Code) If the result set has been opened, close the currently open source. exception:   StandardException - thrown on error finish public void finish() throws StandardException(Code) getCurrentRow public ExecRow getCurrentRow() throws StandardException(Code) A union has a single underlying row at a time, although from one of several sources. See Also:   CursorResultSet the current row. exception:   StandardException - thrown on failure. getNextRowCore public ExecRow getNextRowCore() throws StandardException(Code) If there are rows still on the first source, return the next one; otherwise, switch to the second source and return a row from there. exception:   StandardException - thrown on failure getResultDescription public ResultDescription getResultDescription()(Code) Returns the description of the first source. Assumes the compiler ensured both sources had the same description. getRowLocation public RowLocation getRowLocation() throws StandardException(Code) A union has a single underlying row at a time, although from one of several sources. See Also:   CursorResultSet the row location of the current cursor row. exception:   StandardException - thrown on failure getTimeSpent public long getTimeSpent(int type)(Code) Return the total amount of time spent in this ResultSet Parameters:   type - CURRENT_RESULTSET_ONLY - time spent only in this ResultSetENTIRE_RESULTSET_TREE - time spent in this ResultSet and below. long The total amount of time spent (in milliseconds). openCore public void openCore() throws StandardException(Code) open the first source. exception:   StandardException - thrown on failure Fields inherited from org.apache.derby.impl.sql.execute.NoPutResultSetImpl GeneratedMethod checkGM(Code)(Java Doc) protected int[] checkNullCols(Code)(Java Doc) protected ExecRow clonedExecRow(Code)(Java Doc) protected int cncLen(Code)(Java Doc) long heapConglomerate(Code)(Java Doc) protected String indent(Code)(Java Doc) final public int resultSetNumber(Code)(Java Doc) protected int sourceDepth(Code)(Java Doc) protected String subIndent(Code)(Java Doc) protected TargetResultSet targetResultSet(Code)(Java Doc) Methods inherited from org.apache.derby.impl.sql.execute.NoPutResultSetImpl final public void clearCurrentRow()(Code)(Java Doc) protected void clearOrderableCache(Qualifier[][] qualifiers) throws StandardException(Code)(Java Doc) public void close() throws StandardException(Code)(Java Doc) public void closeRowSource()(Code)(Java Doc) public String getCursorName()(Code)(Java Doc) public DataValueDescriptor[] getNextRowFromRowSource() throws StandardException(Code)(Java Doc) public ResultDescription getResultDescription()(Code)(Java Doc) public FormatableBitSet getValidColumns()(Code)(Java Doc) public boolean isForUpdate()(Code)(Java Doc) public void markRowAsDeleted() throws StandardException(Code)(Java Doc) public boolean needsRowLocation()(Code)(Java Doc) public boolean needsToClone()(Code)(Java Doc) public void positionScanAtRowLocation(RowLocation rl) throws StandardException(Code)(Java Doc) public static String printQualifiers(Qualifier[][] qualifiers)(Code)(Java Doc) public int resultSetNumber()(Code)(Java Doc) public void rowLocation(RowLocation rl) throws StandardException(Code)(Java Doc) protected void setCheckConstraints(GeneratedMethod checkGM)(Code)(Java Doc) final public void setCurrentRow(ExecRow row)(Code)(Java Doc) protected void setHeapConglomerate(long heapConglomerate)(Code)(Java Doc) public void setNeedsRowLocation(boolean needsRowLocation)(Code)(Java Doc) public void setTargetResultSet(TargetResultSet trs)(Code)(Java Doc) protected boolean skipRow(ExecRow row) throws StandardException(Code)(Java Doc) protected boolean skipScan(ExecIndexRow startPosition, ExecIndexRow stopPosition) throws StandardException(Code)(Java Doc) public void updateRow(ExecRow row) throws StandardException(Code)(Java Doc) Fields inherited from org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl protected Activation activation(Code)(Java Doc) public long beginTime(Code)(Java Doc) public long closeTime(Code)(Java Doc) ExecRow compactRow(Code)(Java Doc) public long constructorTime(Code)(Java Doc) protected ExecRow currentRow(Code)(Java Doc) protected long endExecutionTime(Code)(Java Doc) protected boolean finished(Code)(Java Doc) protected boolean isOpen(Code)(Java Doc) protected boolean isTopResultSet(Code)(Java Doc) protected LanguageConnectionContext lcc(Code)(Java Doc) public long nextTime(Code)(Java Doc) public int numOpens(Code)(Java Doc) public long openTime(Code)(Java Doc) public double optimizerEstimatedCost(Code)(Java Doc) public double optimizerEstimatedRowCount(Code)(Java Doc) ResultDescription resultDescription(Code)(Java Doc) public int rowsFiltered(Code)(Java Doc) public int rowsSeen(Code)(Java Doc) protected long startExecutionTime(Code)(Java Doc) public NoPutResultSet[] subqueryTrackingArray(Code)(Java Doc) Methods inherited from org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl final protected void addWarning(SQLWarning w)(Code)(Java Doc) protected void attachStatementContext() throws StandardException(Code)(Java Doc) public void checkCancellationFlag() throws StandardException(Code)(Java Doc) public boolean checkRowPosition(int isType) throws StandardException(Code)(Java Doc) public void cleanUp() throws StandardException(Code)(Java Doc) final protected String dumpTimeStats(String indent, String subIndent)(Code)(Java Doc) public void finish() throws StandardException(Code)(Java Doc) final protected void finishAndRTS() throws StandardException(Code)(Java Doc) public ExecRow getAbsoluteRow(int row) throws StandardException(Code)(Java Doc) final public Activation getActivation()(Code)(Java Doc) public ResultSet getAutoGeneratedKeysResultset()(Code)(Java Doc) public Timestamp getBeginExecutionTimestamp()(Code)(Java Doc) protected ExecRow getCompactRow(ExecRow candidate, FormatableBitSet accessedCols, FormatableBitSet otherCols, boolean isKeyed) throws StandardException(Code)(Java Doc) final protected long getCurrentTimeMillis()(Code)(Java Doc) final protected long getElapsedMillis(long beginTime)(Code)(Java Doc) public Timestamp getEndExecutionTimestamp()(Code)(Java Doc) public double getEstimatedRowCount()(Code)(Java Doc) public long getExecuteTime()(Code)(Java Doc) final ExecutionFactory getExecutionFactory()(Code)(Java Doc) public ExecRow getFirstRow() throws StandardException(Code)(Java Doc) final protected LanguageConnectionContext getLanguageConnectionContext()(Code)(Java Doc) public ExecRow getLastRow() throws StandardException(Code)(Java Doc) final public ExecRow getNextRow() throws StandardException(Code)(Java Doc) abstract public ExecRow getNextRowCore() throws StandardException(Code)(Java Doc) public int getPointOfAttachment()(Code)(Java Doc) public ExecRow getPreviousRow() throws StandardException(Code)(Java Doc) public ExecRow getRelativeRow(int row) throws StandardException(Code)(Java Doc) public ResultDescription getResultDescription()(Code)(Java Doc) public int getRowNumber()(Code)(Java Doc) public int getScanIsolationLevel()(Code)(Java Doc) final public NoPutResultSet[] getSubqueryTrackingArray(int numSubqueries)(Code)(Java Doc) final TransactionController getTransactionController()(Code)(Java Doc) final public SQLWarning getWarnings()(Code)(Java Doc) public boolean isClosed()(Code)(Java Doc) public boolean isForUpdate()(Code)(Java Doc) public void markAsTopResultSet()(Code)(Java Doc) final public int modifiedRowCount()(Code)(Java Doc) final public void open() throws StandardException(Code)(Java Doc) abstract public void openCore() throws StandardException(Code)(Java Doc) public void reopenCore() throws StandardException(Code)(Java Doc) public boolean requiresRelocking()(Code)(Java Doc) public int resultSetNumber()(Code)(Java Doc) public boolean returnsRows()(Code)(Java Doc) public ExecRow setAfterLastRow() throws StandardException(Code)(Java Doc) public ExecRow setBeforeFirstRow() throws StandardException(Code)(Java Doc) protected ExecRow setCompactRow(ExecRow candidateRow, ExecRow compactRow)(Code)(Java Doc) final protected void setCompatRow(ExecRow compactRow, Object[] sourceRow)(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)