Examples of org.hibernate.id.MultipleHiLoPerTableGenerator

org.hibernate.id.MultipleHiLoPerTableGenerator

A hilo IdentifierGenerator that returns a Long, constructed using a hi/lo algorithm. The hi value MUST be fetched in a seperate transaction to the Session transaction so the generator must be able to obtain a new connection and commit it. Hence this implementation may not be used when the user is supplying connections. In this case a SequenceHiLoGenerator would be a better choice (where supported).

A hilo IdentifierGenerator that uses a database table to store the last generated values. A table can contains several hi values. They are distinct from each other through a key

This implementation is not compliant with a user connection

Allowed parameters (all of them are optional):

table: table name (default hibernate_sequences)
primary_key_column: key column name (default sequence_name)
value_column: hi value column name(default sequence_next_hi_value)
primary_key_value: key value for the current entity (default to the entity's primary table name)
primary_key_length: length of the key column in DB represented as a varchar (default to 255)
max_lo: max low value before increasing hi (default to Short.MAX_VALUE)

@author Emmanuel Bernard @author Klaus Richarz.


    @Override
    public Table snapshot(IdentifierGenerator ig) {
        Table table;
        try {
            MultipleHiLoPerTableGenerator tableGenerator = (MultipleHiLoPerTableGenerator) ig;
            Class<? extends MultipleHiLoPerTableGenerator> aClass = tableGenerator.getClass();


            Field tableName = aClass.getDeclaredField(TABLE_NAME);
            tableName.setAccessible(true);
            Field pkColumnName = aClass.getDeclaredField(PK_COLUMN_NAME);
            pkColumnName.setAccessible(true);

Examples of org.hibernate.id.MultipleHiLoPerTableGenerator

Related Classes of org.hibernate.id.MultipleHiLoPerTableGenerator