Class RefTypeCompiler

  • All Implemented Interfaces:
    TypeCompiler

    public class RefTypeCompiler
    extends BaseTypeCompiler
    This class implements TypeCompiler for the SQL REF datatype.
    • Constructor Detail

      • RefTypeCompiler

        public RefTypeCompiler()
    • Method Detail

      • getCorrespondingPrimitiveTypeName

        public java.lang.String getCorrespondingPrimitiveTypeName()
        Description copied from interface: TypeCompiler
        Get the name of the corresponding Java type. For numerics and booleans we will get the corresponding Java primitive type. e Each SQL type has a corresponding Java type. When a SQL value is passed to a Java method, it is translated to its corresponding Java type. For example, a SQL Integer will be mapped to a Java int, but a SQL date will be mapped to a java.sql.Date.
        Returns:
        The name of the corresponding Java primitive type.
        See Also:
        TypeCompiler.getCorrespondingPrimitiveTypeName()
      • convertible

        public boolean convertible​(TypeId otherType,
                                   boolean forDataTypeFunction)
        Description copied from interface: TypeCompiler
        Determine if this type can be CONVERTed to some other type
        Parameters:
        otherType - The CompilationType of the other type to compare this type to
        forDataTypeFunction - true if this is a type function that requires more liberal behavior (e.g DOUBLE can convert a char but you cannot cast a CHAR to double.
        Returns:
        true if the types can be converted, false if conversion is not allowed
        See Also:
        TypeCompiler.convertible(org.apache.derby.iapi.types.TypeId, boolean)
      • compatible

        public boolean compatible​(TypeId otherType)
        Tell whether this type is compatible with the given type.
        Parameters:
        otherType - The CompilationType of the other type to compare this type to
        Returns:
        true if the types are compatible, false if not compatible
        See Also:
        TypeCompiler.compatible(org.apache.derby.iapi.types.TypeId)
      • interfaceName

        public java.lang.String interfaceName()
        Description copied from interface: TypeCompiler
        Get the name of the interface for this type. For example, the interface for a SQLInteger is NumberDataValue. The full path name of the type is returned.
        Returns:
        The name of the interface for this type.
        See Also:
        TypeCompiler.interfaceName()
      • nullMethodName

        java.lang.String nullMethodName()
        Description copied from class: BaseTypeCompiler
        Return the method name to get a Derby DataValueDescriptor object of the correct type set to SQL NULL. The method named will be called with one argument: a holder object if pushCollationForDataValue() returns false, otherwise two arguments, the second being the collationType.
        Specified by:
        nullMethodName in class BaseTypeCompiler