/*
* [PJYF Oct 19 2004]
* This is a bad hack to get WO to create indes for external keys.
* We use the primary key constrain generation to create our indexes.
* But we need to be carefull not to overwrite previous constrains
*
*/
protected boolean isSinglePrimaryKeyAttribute(EOAttribute attribute) {
if (attribute == null) return false;
EOEntity entity = (EOEntity) attribute.entity();
if ((entity == null) || entity.isAbstractEntity() || (entity.externalName() == null))
return false;
NSArray primaryKeyAttributes = entity.primaryKeyAttributes();
if (primaryKeyAttributes.count() != 1) return false;
return attribute.name().equals(((EOAttribute) primaryKeyAttributes.lastObject()).name());
}
@Override
public NSArray<EOSQLExpression> statementsToInsertColumnForAttribute(
EOAttribute attribute, EOSchemaGenerationOptions options) {
String columnCreationClause = _columnCreationClauseForAttribute(attribute);
return new NSArray<EOSQLExpression>(
_expressionForString(
(new StringBuilder())
.append("ALTER TABLE ")
.append(attribute.entity().externalName())
.append(_alterPhraseInsertionClausePrefixAtIndex(0))
.append(columnCreationClause)
.toString()));
}
protected static void appendColumnForAttributeToStringBuilder(
EOAttribute attribute, StringBuilder sb) {
sb.append(attribute.entity().externalName());
sb.append('.');
sb.append(attribute.columnName());
}