Package 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

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method 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