package liquibase.diff.output.changelog.core;
import liquibase.change.Change;
import liquibase.change.core.AddUniqueConstraintChange;
import liquibase.database.Database;
import liquibase.diff.output.DiffOutputControl;
import liquibase.diff.output.changelog.ChangeGeneratorChain;
import liquibase.diff.output.changelog.MissingObjectChangeGenerator;
import liquibase.structure.DatabaseObject;
import liquibase.structure.core.Column;
import liquibase.structure.core.Index;
import liquibase.structure.core.Table;
import liquibase.structure.core.UniqueConstraint;
public class MissingUniqueConstraintChangeGenerator implements MissingObjectChangeGenerator {
@Override
public int getPriority(Class<? extends DatabaseObject> objectType, Database database) {
if (UniqueConstraint.class.isAssignableFrom(objectType)) {
return PRIORITY_DEFAULT;
}
return PRIORITY_NONE;
}
@Override
public Class<? extends DatabaseObject>[] runAfterTypes() {
return new Class[]{
Table.class,
Column.class
};
}
@Override
public Class<? extends DatabaseObject>[] runBeforeTypes() {
return new Class[]{Index.class};
}
@Override
public Change[] fixMissing(DatabaseObject missingObject, DiffOutputControl control, Database referenceDatabase, Database comparisonDatabase, ChangeGeneratorChain chain) {
UniqueConstraint uc = (UniqueConstraint) missingObject;
if (uc.getTable() == null) {
return null;
}
AddUniqueConstraintChange change = new AddUniqueConstraintChange();
change.setTableName(uc.getTable().getName());
if (uc.getBackingIndex() != null && control.getIncludeTablespace()) {
change.setTablespace(uc.getBackingIndex().getTablespace());
}
if (control.getIncludeCatalog()) {
change.setCatalogName(uc.getTable().getSchema().getCatalogName());
}
if (control.getIncludeSchema()) {
change.setSchemaName(uc.getTable().getSchema().getName());
}
change.setConstraintName(uc.getName());
change.setColumnNames(uc.getColumnNames());
change.setDeferrable(uc.isDeferrable());
change.setInitiallyDeferred(uc.isInitiallyDeferred());
change.setDisabled(uc.isDisabled());
Index backingIndex = uc.getBackingIndex();
// if (backingIndex == null) {
// Index exampleIndex = new Index().setTable(uc.getTable());
// for (String col : uc.getColumns()) {
// exampleIndex.getColumns().add(col);
// }
// control.setAlreadyHandledMissing(exampleIndex);
// } else {
control.setAlreadyHandledMissing(backingIndex);
// }
return new Change[]{change};
}
}