org.apache.derbyTesting.functionTests.tests.lang

Class StringArrayVTI

java.lang.Object

org.apache.derby.vti.VTITemplate

org.apache.derby.vti.StringColumnVTI

org.apache.derbyTesting.functionTests.tests.lang.StringArrayVTI

All Implemented Interfaces:

java.lang.AutoCloseable, java.sql.ResultSet, java.sql.Wrapper

Direct Known Subclasses:

IntegerArrayVTI, StringArrayVTI.MissingConstructor, TableFunctionTest.WarningVTI

public class StringArrayVTI
extends org.apache.derby.vti.StringColumnVTI

This is a concrete VTI which is prepopulated with rows which are just arrays of string columns.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	StringArrayVTI.ConstructorException
static class	StringArrayVTI.GoodVTICosting
static class	StringArrayVTI.MissingConstructor
static class	StringArrayVTI.ZeroArgConstructorNotPublic

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.StringBuffer	_callers
private int	_rowIdx
private java.lang.String[][]	_rows
private static java.lang.String[]	EXPECTED_STACK
static double	FAKE_INSTANTIATION_COST
static double	FAKE_ROW_COUNT

Fields inherited from interface java.sql.ResultSet

CLOSE_CURSORS_AT_COMMIT, CONCUR_READ_ONLY, CONCUR_UPDATABLE, FETCH_FORWARD, FETCH_REVERSE, FETCH_UNKNOWN, HOLD_CURSORS_OVER_COMMIT, TYPE_FORWARD_ONLY, TYPE_SCROLL_INSENSITIVE, TYPE_SCROLL_SENSITIVE

Constructor Summary

Constructors

Constructor and Description
StringArrayVTI(java.lang.String[] columnNames, java.lang.String[][] rows)

Method Summary

Modifier and Type	Method and Description
private java.sql.SQLException	badStack(java.lang.String[] expected, java.lang.String[] actual) Complain that we don't like the stack.
void	close()
private java.lang.String	deduceGetXXXCaller()
private int	findIndex(java.lang.String expectedMethod, java.lang.String[] actualMethodNames) Look for a method name on a stack and return its location as an index into the stack.
protected java.lang.String	getRawColumn(int columnNumber)
static java.lang.String	getXXXrecord() This SQL function returns the list of getXXX() calls made to the last StringArrayVTI.
private java.lang.String	locateGetXXXCaller(java.lang.StackTraceElement[] stack) Find the getXXX() method above us on the stack.
boolean	next()
protected java.sql.SQLException	notImplemented(java.lang.String arg0)
private java.lang.String[]	squeezeMethodNames(java.lang.StackTraceElement[] stack) Extract the names of methods on a stack.
private java.lang.String	stringify(java.lang.Object[] raw) Turn an array into a printable String.

Methods inherited from class org.apache.derby.vti.StringColumnVTI

findColumn, getAsciiStream, getBigDecimal, getBinaryStream, getBlob, getBoolean, getByte, getBytes, getClob, getColumnCount, getColumnName, getDate, getDouble, getFloat, getInt, getLong, getShort, getString, getTime, getTimestamp, wasNull

Methods inherited from class org.apache.derby.vti.VTITemplate

getBigDecimal, getBigDecimal, getBoolean, getByte, getBytes, getDate, getDouble, getFloat, getInt, getLong, getObject, getShort, getString, getTime, getTimestamp

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.sql.ResultSet

getHoldability, getNCharacterStream, getNCharacterStream, getNClob, getNClob, getNString, getNString, getObject, getObject, getRowId, getRowId, getSQLXML, getSQLXML, isClosed, updateAsciiStream, updateAsciiStream, updateAsciiStream, updateAsciiStream, updateBinaryStream, updateBinaryStream, updateBinaryStream, updateBinaryStream, updateBlob, updateBlob, updateBlob, updateBlob, updateCharacterStream, updateCharacterStream, updateCharacterStream, updateCharacterStream, updateClob, updateClob, updateClob, updateClob, updateNCharacterStream, updateNCharacterStream, updateNCharacterStream, updateNCharacterStream, updateNClob, updateNClob, updateNClob, updateNClob, updateNClob, updateNClob, updateNString, updateNString, updateObject, updateObject, updateObject, updateObject, updateRowId, updateRowId, updateSQLXML, updateSQLXML

Methods inherited from interface java.sql.Wrapper

isWrapperFor, unwrap

Field Detail

FAKE_ROW_COUNT

public static final double FAKE_ROW_COUNT

See Also:

Constant Field Values

FAKE_INSTANTIATION_COST

public static final double FAKE_INSTANTIATION_COST

See Also:

Constant Field Values

EXPECTED_STACK

private static final java.lang.String[] EXPECTED_STACK

_rowIdx

private int _rowIdx

_rows

private java.lang.String[][] _rows

_callers

private static java.lang.StringBuffer _callers

Constructor Detail

StringArrayVTI

public StringArrayVTI(java.lang.String[] columnNames,
                      java.lang.String[][] rows)

Method Detail

getXXXrecord

public static java.lang.String getXXXrecord()

This SQL function returns the list of getXXX() calls made to the last StringArrayVTI.

getRawColumn

protected java.lang.String getRawColumn(int columnNumber)
                                 throws java.sql.SQLException

Specified by:

getRawColumn in class org.apache.derby.vti.StringColumnVTI

Throws:

java.sql.SQLException

deduceGetXXXCaller

private java.lang.String deduceGetXXXCaller()
                                     throws java.sql.SQLException

Throws:

java.sql.SQLException

next

public boolean next()
             throws java.sql.SQLException

Specified by:

next in interface java.sql.ResultSet

Specified by:

next in class org.apache.derby.vti.VTITemplate

Throws:

java.sql.SQLException

close

public void close()
           throws java.sql.SQLException

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.sql.ResultSet

Specified by:

close in class org.apache.derby.vti.VTITemplate

Throws:

java.sql.SQLException

locateGetXXXCaller

private java.lang.String locateGetXXXCaller(java.lang.StackTraceElement[] stack)
                                     throws java.sql.SQLException

Find the getXXX() method above us on the stack. The stack looks like this:

• getXXX()
• getString()
• getRawColumn()
• deduceGetXXXCaller()

Except if the actual getXXX() method is getString()

Throws:

java.sql.SQLException

badStack

private java.sql.SQLException badStack(java.lang.String[] expected,
                                       java.lang.String[] actual)

Complain that we don't like the stack.

findIndex

private int findIndex(java.lang.String expectedMethod,
                      java.lang.String[] actualMethodNames)

Look for a method name on a stack and return its location as an index into the stack. Returns -1 if the expected name is not found.

squeezeMethodNames

private java.lang.String[] squeezeMethodNames(java.lang.StackTraceElement[] stack)

Extract the names of methods on a stack.

stringify

private java.lang.String stringify(java.lang.Object[] raw)

Turn an array into a printable String.

notImplemented

protected java.sql.SQLException notImplemented(java.lang.String arg0)