com.metamatrix.jdbc
Class DeferredMetadataProvider

java.lang.Object
  com.metamatrix.jdbc.AbstractMetadataProvider
      com.metamatrix.jdbc.DeferredMetadataProvider

All Implemented Interfaces:

ResultsMetadataProvider

public class DeferredMetadataProvider
extends AbstractMetadataProvider

This metadata provider starts with just column names and types (provided in the response) but must lazily load the rest of the metadata when necessary.

Method Summary

static DeferredMetadataProvider	createWithInitialData(java.lang.String[] columnNames, java.lang.String[] columnTypes, MMStatement statement, long requestID)
int	getColumnCount() Get number of columns in the result set metadata
int	getParameterCount() Get parameter count from original command
java.lang.Object	getValue(int columnIndex, java.lang.Integer metadataPropertyKey) Get metadata value for the column at columnIndex for a given metadata property.

Methods inherited from class com.metamatrix.jdbc.AbstractMetadataProvider

getBooleanValue, getIntValue, getStringValue

Methods inherited from class java.lang.Object

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

Method Detail

createWithInitialData

public static DeferredMetadataProvider createWithInitialData(java.lang.String[] columnNames,
                                                             java.lang.String[] columnTypes,
                                                             MMStatement statement,
                                                             long requestID)

getColumnCount

public int getColumnCount()
                   throws java.sql.SQLException

Description copied from interface: ResultsMetadataProvider

Get number of columns in the result set metadata

Returns:

Column count

Throws:

java.sql.SQLException

getValue

public java.lang.Object getValue(int columnIndex,
                                 java.lang.Integer metadataPropertyKey)
                          throws java.sql.SQLException

Description copied from interface: ResultsMetadataProvider

Get metadata value for the column at columnIndex for a given metadata property.

Parameters:

columnIndex - The column index

metadataPropertyKey - The metadata property

Returns:

The value to return

Throws:

java.sql.SQLException

getParameterCount

public int getParameterCount()
                      throws java.sql.SQLException

Description copied from interface: ResultsMetadataProvider

Get parameter count from original command

Returns:

count

Throws:

java.sql.SQLException