org.apache.derby.client.am
Class ColumnMetaData40

java.lang.Object
  org.apache.derby.client.am.ColumnMetaData
      org.apache.derby.client.am.ColumnMetaData40

All Implemented Interfaces:

java.sql.ResultSetMetaData, java.sql.Wrapper

public class ColumnMetaData40
extends ColumnMetaData

Field Summary

Fields inherited from class org.apache.derby.client.am.ColumnMetaData

clientParamtertype_, columns_, logWriter_, mddOverrideArray_, nullable_, protocolTypesCache_, protocolTypeToOverrideLidMapping_, resultSetConcurrency_, singleMixedByteOrDouble_, sqlCcsid_, sqlComment_, sqldFcode_, sqldHold_, sqldKeytype_, sqldRdbnam_, sqldReturn_, sqldSchema_, sqldScroll_, sqldSensitive_, sqlLabel_, sqlLength_, sqlName_, sqlPrecision_, sqlScale_, sqlType_, sqlUDTclassName_, sqlUDTname_, sqlUnnamed_, sqlxBasename_, sqlxCorname_, sqlxGenerated_, sqlxKeymem_, sqlxName_, sqlxParmmode_, sqlxRdbnam_, sqlxSchema_, sqlxUpdatable_, types_

Fields inherited from interface java.sql.ResultSetMetaData

columnNoNulls, columnNullable, columnNullableUnknown

Constructor Summary

ColumnMetaData40(LogWriter logWriter)
Calls the superclass constructor to pass the parameters

ColumnMetaData40(LogWriter logWriter, int upperBound)
Calls the superclass constructor to pass the parameters

Method Summary

boolean	isWrapperFor(java.lang.Class<?> interfaces) Returns false unless interfaces is implemented
<T> T	unwrap(java.lang.Class<T> interfaces) Returns this if this class implements the interface

Methods inherited from class org.apache.derby.client.am.ColumnMetaData

assignColumnName, checkForClosedStatement, checkForValidColumnIndex, columnIsNotInUnicode, finalize, findColumnX, getCatalogName, getColumnClassName, getColumnCount, getColumnDisplaySize, getColumnLabel, getColumnName, getColumnType, getColumnTypeName, getPrecision, getScale, getSchemaName, getTableName, hasLobColumns, initializeCache, isAutoIncrement, isCaseSensitive, isCurrency, isDefinitelyWritable, isNullable, isParameterModeGuessedAsOutput, isReadOnly, isSearchable, isSigned, isWritable, markClosed, setLogWriter

Methods inherited from class java.lang.Object

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

Constructor Detail

ColumnMetaData40

public ColumnMetaData40(LogWriter logWriter)

Calls the superclass constructor to pass the parameters

Parameters:

logWriter - LogWriter

ColumnMetaData40

public ColumnMetaData40(LogWriter logWriter,
                        int upperBound)

Calls the superclass constructor to pass the parameters

Parameters:

logWriter - LogWriter

upperBound - int

Method Detail

isWrapperFor

public boolean isWrapperFor(java.lang.Class<?> interfaces)
                     throws java.sql.SQLException

Returns false unless interfaces is implemented

Parameters:

interfaces - a Class defining an interface.

Returns:

true if this implements the interface or directly or indirectly wraps an object that does.

Throws:

java.sql.SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

unwrap

public <T> T unwrap(java.lang.Class<T> interfaces)
         throws java.sql.SQLException

Returns this if this class implements the interface

Parameters:

interfaces - a Class defining an interface

Returns:

an object that implements the interface

Throws:

java.sql.SQLExption - if no object if found that implements the interface

java.sql.SQLException