org.hibernate.type.descriptor.sql.VarcharTypeDescriptor#INSTANCE源码实例Demo

@Override
protected SqlTypeDescriptor getSqlTypeDescriptorOverride(int sqlCode) {
	// See HHH-12753
	// It seems that DB2's JDBC 4.0 support as of 9.5 does not support the N-variant methods like
	// NClob or NString.  Therefore here we overwrite the sql type descriptors to use the non-N variants
	// which are supported.
	switch ( sqlCode ) {
		case Types.NCHAR:
			return CharTypeDescriptor.INSTANCE;

		case Types.NCLOB:
			if ( useInputStreamToInsertBlob() ) {
				return ClobTypeDescriptor.STREAM_BINDING;
			}
			else {
				return ClobTypeDescriptor.CLOB_BINDING;
			}

		case Types.NVARCHAR:
			return VarcharTypeDescriptor.INSTANCE;

		default:
			return super.getSqlTypeDescriptorOverride( sqlCode );
	}
}
 

@Override
protected SqlTypeDescriptor getSqlTypeDescriptorOverride(final int sqlCode) {
	switch ( sqlCode ) {
		case Types.CLOB:
			return this.clobTypeDescriptor;
		case Types.NCLOB:
			return this.nClobTypeDescriptor;
		case Types.BLOB:
			return this.blobTypeDescriptor;
		case Types.TINYINT:
			// tinyint is unsigned on HANA
			return SmallIntTypeDescriptor.INSTANCE;
		case Types.BOOLEAN:
			return this.useLegacyBooleanType ? BitTypeDescriptor.INSTANCE : BooleanTypeDescriptor.INSTANCE;
		case Types.VARCHAR:
			return this.useUnicodeStringTypes ? NVarcharTypeDescriptor.INSTANCE : VarcharTypeDescriptor.INSTANCE;
		case Types.CHAR:
			return this.useUnicodeStringTypes ? NCharTypeDescriptor.INSTANCE : CharTypeDescriptor.INSTANCE;
		default:
			return super.getSqlTypeDescriptorOverride( sqlCode );
	}
}
 

public ZoneIdType(Configuration configuration) {
    super(
        VarcharTypeDescriptor.INSTANCE,
        ZoneIdTypeDescriptor.INSTANCE,
        configuration
    );
}
 

public BitSetType() {
    super( VarcharTypeDescriptor.INSTANCE, BitSetTypeDescriptor.INSTANCE );
}
 

public CommaDelimitedStringsType() {
    super(
        VarcharTypeDescriptor.INSTANCE,
        new CommaDelimitedStringsJavaTypeDescriptor()
    );
}
 

public ClassType() {
	super( VarcharTypeDescriptor.INSTANCE, ClassTypeDescriptor.INSTANCE );
}
 

public StringType() {
	super( VarcharTypeDescriptor.INSTANCE, StringTypeDescriptor.INSTANCE );
}
 

public CharArrayType() {
	super( VarcharTypeDescriptor.INSTANCE, PrimitiveCharacterArrayTypeDescriptor.INSTANCE );
}
 

public CurrencyType() {
	super( VarcharTypeDescriptor.INSTANCE, CurrencyTypeDescriptor.INSTANCE );
}
 

public CharacterArrayType() {
	super( VarcharTypeDescriptor.INSTANCE, CharacterArrayTypeDescriptor.INSTANCE );
}
 

public UUIDCharType() {
	super( VarcharTypeDescriptor.INSTANCE, UUIDTypeDescriptor.INSTANCE );
}
 

public TimeZoneType() {
	super( VarcharTypeDescriptor.INSTANCE, TimeZoneTypeDescriptor.INSTANCE );
}
 

public LocaleType() {
	super( VarcharTypeDescriptor.INSTANCE, LocaleTypeDescriptor.INSTANCE );
}
 

public UrlType() {
	super( VarcharTypeDescriptor.INSTANCE, UrlTypeDescriptor.INSTANCE );
}
 

public ZoneIdType() {
    super(
        VarcharTypeDescriptor.INSTANCE,
        ZoneIdTypeDescriptor.INSTANCE
    );
}
 

public LocalDateStringType() {
    super(VarcharTypeDescriptor.INSTANCE, LocalDateStringJavaDescriptor.INSTANCE);
}
 

public LocalDateStringType() {
    super(VarcharTypeDescriptor.INSTANCE, LocalDateStringJavaDescriptor.INSTANCE);
}