jodd.db.type

Class NullAwareSqlType<T>

java.lang.Object

jodd.db.type.SqlType<T>

jodd.db.type.NullAwareSqlType<T>

Direct Known Subclasses:

BooleanSqlType, ByteSqlType, CharacterSqlType, DoubleSqlType, FloatSqlType, IntegerSqlType, LongSqlType, ShortSqlType

public abstract class NullAwareSqlType<T>
extends SqlType<T>

Null-aware sql types.

Field Summary

Fields inherited from class jodd.db.type.SqlType

DB_SQLTYPE_NOT_AVAILABLE, DB_SQLTYPE_UNKNOWN, sqlType

Constructor Summary

Constructors

Constructor and Description
NullAwareSqlType()

Method Summary

Modifier and Type	Method and Description
<E> E	readValue(java.sql.ResultSet rs, int index, java.lang.Class<E> destinationType, int dbSqlType) Detects if there was a null reading and returns null if it was.
void	storeValue(java.sql.PreparedStatement st, int index, java.lang.Object value, int dbSqlType) Detects null before storing the value into the database.

Methods inherited from class jodd.db.type.SqlType

get, prepareGetValue, set

Methods inherited from class java.lang.Object

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

Constructor Detail

NullAwareSqlType

public NullAwareSqlType()

Method Detail

readValue

public <E> E readValue(java.sql.ResultSet rs,
                       int index,
                       java.lang.Class<E> destinationType,
                       int dbSqlType)
                throws java.sql.SQLException

Detects if there was a null reading and returns null if it was. Result set returns default value (e.g. 0) for many getters, therefore it detects if it was a null reading or it is a real value.

Overrides:

readValue in class SqlType<T>

Parameters:

rs - result set

index - database column index

destinationType - property type

dbSqlType - hint for column sql type value

Throws:

java.sql.SQLException

storeValue

public void storeValue(java.sql.PreparedStatement st,
                       int index,
                       java.lang.Object value,
                       int dbSqlType)
                throws java.sql.SQLException

Detects null before storing the value into the database.

Overrides:

storeValue in class SqlType<T>

Throws:

java.sql.SQLException