oracle.jdbc

Interface OracleParameterMetaData

All Superinterfaces:

java.sql.ParameterMetaData, java.sql.Wrapper

public interface OracleParameterMetaData
extends java.sql.ParameterMetaData

This interface defines the Oracle extensions to the standard JDBC interface java.sql.ParameterMetaData. For pre-JDK 1.4 applications, this interface provides the equivalent functions in java.sql.ParameterMetaData. Applications can use java.sql.ParameterMetaData where they do not make use of Oracle extensions. However, when an application uses the Oracle extensions to java.sql.ParameterMetaData, it must use oracle.jdbc.OracleParameterMetaData.

This is an interface that can be used to get information about the types and properties of the parameters in a PreparedStatement object.

Field Summary

Fields inherited from interface java.sql.ParameterMetaData

parameterModeIn, parameterModeInOut, parameterModeOut, parameterModeUnknown, parameterNoNulls, parameterNullable, parameterNullableUnknown

Method Summary

Modifier and Type	Method and Description
VectorMetaData	getVectorMetaData(int param) Returns the metadata for a VECTOR parameter, or null if the parameter is not a VECTOR.
void	query(java.sql.Connection conn) Re-query the database for parameter types.

Methods inherited from interface java.sql.ParameterMetaData

getParameterClassName, getParameterCount, getParameterMode, getParameterType, getParameterTypeName, getPrecision, getScale, isNullable, isSigned

Methods inherited from interface java.sql.Wrapper

isWrapperFor, unwrap

Method Detail

query

void query(java.sql.Connection conn)
    throws java.sql.SQLException

Re-query the database for parameter types. This method will re-query the types in the database without re-parsing the statement (if possible). This method will parse the statement again if the ParameterMetadata cache is enabled and oracle.jdbc.parameterMetadataCacheIncludeParsing (system property) is set to false (default value). For any other use case, this method will re-use the parsing information and only re-issue the database queries.

Parameters:

conn - - the connection to use to query the database.

Throws:

java.sql.SQLException - - if there was an error processing the queries.

getVectorMetaData

VectorMetaData getVectorMetaData(int param)
                          throws java.sql.SQLException

Returns the metadata for a VECTOR parameter, or null if the parameter is not a VECTOR.

Parameters:

param - the first parameter is 1, the second is 2, ...

Returns:

VECTOR column metadata, or null if the column is not a VECTOR.

Throws:

java.sql.SQLException - if a database access error occurs

Since:

23.4