Examples with InMemoryValueGenerationStrategy org.hibernate.tuple.InMemoryValueGenerationStrategy used on opensource projects

Example 1 with InMemoryValueGenerationStrategy

use of org.hibernate.tuple.InMemoryValueGenerationStrategy in project hibernate-orm by hibernate.

the class AbstractEntityPersister method update.

/**
	 * Update an object
	 */
public void update(final Serializable id, final Object[] fields, final int[] dirtyFields, final boolean hasDirtyCollection, final Object[] oldFields, final Object oldVersion, final Object object, final Object rowId, final SharedSessionContractImplementor session) throws HibernateException {
    // apply any pre-update in-memory value generation
    if (getEntityMetamodel().hasPreUpdateGeneratedValues()) {
        final InMemoryValueGenerationStrategy[] strategies = getEntityMetamodel().getInMemoryValueGenerationStrategies();
        for (int i = 0; i < strategies.length; i++) {
            if (strategies[i] != null && strategies[i].getGenerationTiming().includesUpdate()) {
                fields[i] = strategies[i].getValueGenerator().generateValue((Session) session, object);
                setPropertyValue(object, i, fields[i]);
            // todo : probably best to add to dirtyFields if not-null
            }
        }
    }
    //note: dirtyFields==null means we had no snapshot, and we couldn't get one using select-beforeQuery-update
    //	  oldFields==null just means we had no snapshot to begin with (we might have used select-beforeQuery-update to get the dirtyFields)
    final boolean[] tableUpdateNeeded = getTableUpdateNeeded(dirtyFields, hasDirtyCollection);
    final int span = getTableSpan();
    final boolean[] propsToUpdate;
    final String[] updateStrings;
    EntityEntry entry = session.getPersistenceContext().getEntry(object);
    // in the process of being deleted.
    if (entry == null && !isMutable()) {
        throw new IllegalStateException("Updating immutable entity that is not in session yet!");
    }
    if ((entityMetamodel.isDynamicUpdate() && dirtyFields != null)) {
        // We need to generate the UPDATE SQL when dynamic-update="true"
        propsToUpdate = getPropertiesToUpdate(dirtyFields, hasDirtyCollection);
        // don't need to check laziness (dirty checking algorithm handles that)
        updateStrings = new String[span];
        for (int j = 0; j < span; j++) {
            updateStrings[j] = tableUpdateNeeded[j] ? generateUpdateString(propsToUpdate, j, oldFields, j == 0 && rowId != null) : null;
        }
    } else if (!isModifiableEntity(entry)) {
        // We need to generate UPDATE SQL when a non-modifiable entity (e.g., read-only or immutable)
        // needs:
        // - to have references to transient entities set to null beforeQuery being deleted
        // - to have version incremented do to a "dirty" association
        // If dirtyFields == null, then that means that there are no dirty properties to
        // to be updated; an empty array for the dirty fields needs to be passed to
        // getPropertiesToUpdate() instead of null.
        propsToUpdate = getPropertiesToUpdate((dirtyFields == null ? ArrayHelper.EMPTY_INT_ARRAY : dirtyFields), hasDirtyCollection);
        // don't need to check laziness (dirty checking algorithm handles that)
        updateStrings = new String[span];
        for (int j = 0; j < span; j++) {
            updateStrings[j] = tableUpdateNeeded[j] ? generateUpdateString(propsToUpdate, j, oldFields, j == 0 && rowId != null) : null;
        }
    } else {
        // For the case of dynamic-update="false", or no snapshot, we use the static SQL
        updateStrings = getUpdateStrings(rowId != null, hasUninitializedLazyProperties(object));
        propsToUpdate = getPropertyUpdateability(object);
    }
    for (int j = 0; j < span; j++) {
        // Now update only the tables with dirty properties (and the table with the version number)
        if (tableUpdateNeeded[j]) {
            updateOrInsert(id, fields, oldFields, j == 0 ? rowId : null, propsToUpdate, j, oldVersion, object, updateStrings[j], session);
        }
    }
}