Package org.apache.ofbiz.entity.jdbc

Class JdbcValueHandler<T>

java.lang.Object

org.apache.ofbiz.entity.jdbc.JdbcValueHandler<T>

Direct Known Subclasses:

JdbcValueHandler.ArrayJdbcValueHandler, JdbcValueHandler.BigDecimalJdbcValueHandler, JdbcValueHandler.BlobJdbcValueHandler, JdbcValueHandler.BooleanJdbcValueHandler, JdbcValueHandler.ByteArrayJdbcValueHandler, JdbcValueHandler.ClobJdbcValueHandler, JdbcValueHandler.DateJdbcValueHandler, JdbcValueHandler.DoubleJdbcValueHandler, JdbcValueHandler.FloatJdbcValueHandler, JdbcValueHandler.IntegerJdbcValueHandler, JdbcValueHandler.LongJdbcValueHandler, JdbcValueHandler.ObjectJdbcValueHandler, JdbcValueHandler.RowIdJdbcValueHandler, JdbcValueHandler.ShortJdbcValueHandler, JdbcValueHandler.StringJdbcValueHandler, JdbcValueHandler.TimeJdbcValueHandler, JdbcValueHandler.TimestampJdbcValueHandler

public abstract class JdbcValueHandler<T>
extends Object

An object that handles getting/setting column values in JDBC PreparedStatement and ResultSet objects.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	JdbcValueHandler.ArrayJdbcValueHandler	A java.sql.Array JDBC value handler.
protected static class	JdbcValueHandler.BigDecimalJdbcValueHandler	A java.math.BigDecimal JDBC value handler.
protected static class	JdbcValueHandler.BlobJdbcValueHandler	A java.sql.Blob JDBC value handler.
protected static class	JdbcValueHandler.BooleanJdbcValueHandler	A java.lang.Boolean JDBC value handler.
protected static class	JdbcValueHandler.ByteArrayJdbcValueHandler	A byte[] JDBC value handler.
protected static class	JdbcValueHandler.ClobJdbcValueHandler	A java.sql.Clob JDBC value handler.
protected static class	JdbcValueHandler.DateJdbcValueHandler	A java.sql.Date JDBC value handler.
protected static class	JdbcValueHandler.DoubleJdbcValueHandler	A java.lang.Double JDBC value handler.
protected static class	JdbcValueHandler.FloatJdbcValueHandler	A java.lang.Float JDBC value handler.
protected static class	JdbcValueHandler.IntegerJdbcValueHandler	A java.lang.Integer JDBC value handler.
protected static class	JdbcValueHandler.LongJdbcValueHandler	A java.lang.Long JDBC value handler.
protected static class	JdbcValueHandler.ObjectJdbcValueHandler	A java.lang.Object JDBC value handler.
protected static class	JdbcValueHandler.RowIdJdbcValueHandler	A java.sql.RowId JDBC value handler.
protected static class	JdbcValueHandler.ShortJdbcValueHandler	A java.lang.Short JDBC value handler.
protected static class	JdbcValueHandler.StringJdbcValueHandler	A java.lang.String JDBC value handler.
protected static class	JdbcValueHandler.TimeJdbcValueHandler	A java.sql.Time JDBC value handler.
protected static class	JdbcValueHandler.TimestampJdbcValueHandler	A java.sql.Timestamp JDBC value handler.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	JdbcValueHandler(int sqlType)

Method Summary

Modifier and Type	Method	Description
protected abstract void	castAndSetValue(PreparedStatement ps, int parameterIndex, T obj)	Sets a value in a PreparedStatement.
protected JdbcValueHandler<T>	create(int sqlType)	Create jdbc value handler.
static JdbcValueHandler<?>	getInstance(String javaType, String sqlType)	Returns the JdbcValueHandler that corresponds to a field type.
abstract Class<T>	getJavaClass()
int	getSqlType()	Returns the SQL type for this handler.
abstract T	getValue(ResultSet rs, int columnIndex)	Returns a value from a ResultSet.
protected abstract JdbcValueHandler<T>	newInstance(int sqlType)	Returns a new instance of the object - initialized with the specified SQL type.
protected static String	parseSqlType(String sqlType)
protected static byte[]	serializeObject(Object obj)
void	setValue(PreparedStatement ps, int parameterIndex, T obj)	Sets a value in a PreparedStatement.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

JdbcValueHandler

protected JdbcValueHandler(int sqlType)

Method Details

getInstance

public static JdbcValueHandler<?> getInstance(String javaType,
 String sqlType)

Returns the JdbcValueHandler that corresponds to a field type.

Parameters:

javaType - The Java type specified in fieldtype*.xml

sqlType - The SQL type specified in fieldtype*.xml

Returns:

A JdbcValueHandler instance

parseSqlType

protected static String parseSqlType(String sqlType)

serializeObject

protected static byte[] serializeObject(Object obj)
                                 throws SQLException

Throws:

SQLException

castAndSetValue

protected abstract void castAndSetValue(PreparedStatement ps,
 int parameterIndex,
 T obj)
                                 throws SQLException

Sets a value in a PreparedStatement. The obj argument is converted to the correct data type. Subclasses override this method to cast obj to the correct data type and call the appropriate PreparedStatement.setXxx method.

Parameters:

ps -

parameterIndex -

obj -

Throws:

SQLException

create

protected JdbcValueHandler<T> create(int sqlType)

Create jdbc value handler.

Parameters:

sqlType - the sql type

Returns:

the jdbc value handler

getSqlType

public int getSqlType()

Returns the SQL type for this handler.

Returns:

return the SQL type

See Also:

• java.sql.Types

getValue

public abstract T getValue(ResultSet rs,
 int columnIndex)
                    throws SQLException

Returns a value from a ResultSet. The returned object is converted to the Java data type specified in the fieldtype file.

Parameters:

rs - the ResultSet object

columnIndex - the column index

Returns:

get value from result set

Throws:

SQLException

newInstance

protected abstract JdbcValueHandler<T> newInstance(int sqlType)

Returns a new instance of the object - initialized with the specified SQL type.

Parameters:

sqlType - the sql type

Returns:

returns a new instance

getJavaClass

public abstract Class<T> getJavaClass()

setValue

public void setValue(PreparedStatement ps,
 int parameterIndex,
 T obj)
              throws SQLException

Sets a value in a PreparedStatement. The obj argument is converted to the correct data type.

Parameters:

ps -

parameterIndex -

obj -

Throws:

SQLException