Class EmbedParameterSetMetaData

java.lang.Object
org.apache.derby.impl.jdbc.EmbedParameterSetMetaData
All Implemented Interfaces:
ParameterMetaData, Wrapper
public class EmbedParameterSetMetaData extends Object implements ParameterMetaData
This class implements the ParameterMetaData interface from JDBC 3.0.

  • Field Details

  • Constructor Details

    • EmbedParameterSetMetaData

      protected EmbedParameterSetMetaData(ParameterValueSet pvs, DataTypeDescriptor[] types)
      ///////////////////////////////////////////////////////////

  • Method Details

    • getParameterCount

      public int getParameterCount()
      Retrieves the number of parameters in the PreparedStatement object for which this ParameterMetaData object contains information.
      Specified by:
      getParameterCount in interface ParameterMetaData
      Returns:
      the number of parameters

    • isNullable

      public int isNullable(int param) throws SQLException
      Retrieves whether null values are allowed in the designated parameter.
      Specified by:
      isNullable in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      the nullability status of the given parameter; one of ParameterMetaData.parameterNoNulls, ParameterMetaData.parameterNullable, or ParameterMetaData.parameterNullableUnknown
      Throws:
      SQLException - if a database access error occurs

    • isSigned

      public boolean isSigned(int param) throws SQLException
      Retrieves whether values for the designated parameter can be signed numbers.
      Specified by:
      isSigned in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      true if it can be signed numbers
      Throws:
      SQLException - if a database access error occurs

    • getPrecision

      public int getPrecision(int param) throws SQLException
      Retrieves the designated parameter's number of decimal digits.
      Specified by:
      getPrecision in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      precision
      Throws:
      SQLException - if a database access error occurs

    • getScale

      public int getScale(int param) throws SQLException
      Retrieves the designated parameter's number of digits to right of the decimal point.
      Specified by:
      getScale in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      scale
      Throws:
      SQLException - if a database access error occurs

    • getParameterType

      public int getParameterType(int param) throws SQLException
      Retrieves the designated parameter's SQL type.
      Specified by:
      getParameterType in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      SQL type from java.sql.Types
      Throws:
      SQLException - if a database access error occurs

    • getParameterTypeName

      public String getParameterTypeName(int param) throws SQLException
      Retrieves the designated parameter's database-specific type name.
      Specified by:
      getParameterTypeName in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      type the name used by the database. If the parameter type is a user-defined type, then a fully-qualified type name is returned.
      Throws:
      SQLException - if a database access error occurs

    • getParameterClassName

      public String getParameterClassName(int param) throws SQLException
      Retrieves the fully-qualified name of the Java class whose instances should be passed to the method PreparedStatement.setObject.
      Specified by:
      getParameterClassName in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      the fully-qualified name of the class in the Java programming language that would be used by the method PreparedStatement.setObject to set the value in the specified parameter. This is the class name used for custom mapping.
      Throws:
      SQLException - if a database access error occurs

    • getParameterMode

      public int getParameterMode(int param) throws SQLException
      Retrieves the designated parameter's mode.
      Specified by:
      getParameterMode in interface ParameterMetaData
      Parameters:
      param - - the first parameter is 1, the second is 2, ...
      Returns:
      mode of the parameter; one of ParameterMetaData.parameterModeIn, ParameterMetaData.parameterModeOut, or ParameterMetaData.parameterModeInOut ParameterMetaData.parameterModeUnknown.
      Throws:
      SQLException - if a database access error occurs

    • checkPosition

      private void checkPosition(int parameterIndex) throws SQLException
      Throws:
      SQLException

    • isWrapperFor

      public boolean isWrapperFor(Class<?> iface) throws SQLException
      Returns false unless iface is implemented.
      Specified by:
      isWrapperFor in interface Wrapper
      Parameters:
      iface - a class defining an interface
      Returns:
      true if this implements the interface or directly or indirectly wraps an object that does
      Throws:
      SQLException - if an error occurs while determining whether this is a wrapper for an object with the given interface.

    • unwrap

      public <T> T unwrap(Class<T> iface) throws SQLException
      Returns this if this class implements the specified interface.
      Specified by:
      unwrap in interface Wrapper
      Parameters:
      iface - a class defining an interface
      Returns:
      an object that implements the interface
      Throws:
      SQLException - if no object is found that implements the interface