addColumn(t, "COLUMN_NAME", SQL_IDENTIFIER); // not null
addColumn(t, "CONSTRAINT_CATALOG", SQL_IDENTIFIER);
addColumn(t, "CONSTRAINT_SCHEMA", SQL_IDENTIFIER);
addColumn(t, "CONSTRAINT_NAME", SQL_IDENTIFIER); // not null
HsqlName name = HsqlNameManager.newInfoSchemaObjectName(
sysTableHsqlNames[CONSTRAINT_COLUMN_USAGE].name, false,
SchemaObject.INDEX);
t.createPrimaryKeyConstraint(name, new int[] {
0, 1, 2, 3, 4, 5, 6
}, false);
return t;
}
// column number mappings
final int table_catalog = 0;
final int table_schems = 1;
final int table_name = 2;
final int column_name = 3;
final int constraint_catalog = 4;
final int constraint_schema = 5;
final int constraint_name = 6;
//
PersistentStore store = session.sessionData.getRowStore(t);
// calculated column values
String constraintCatalog;
String constraintSchema;
String constraintName;
// Intermediate holders
Iterator tables;
Table table;
Constraint[] constraints;
int constraintCount;
Constraint constraint;
Iterator iterator;
Object[] row;
// Initialization
tables =
database.schemaManager.databaseObjectIterator(SchemaObject.TABLE);
// Do it.
while (tables.hasNext()) {
table = (Table) tables.next();
if (table.isView()
|| !session.getGrantee().isFullyAccessibleByRole(
table.getName())) {
continue;
}
constraints = table.getConstraints();
constraintCount = constraints.length;
constraintCatalog = database.getCatalogName().name;
constraintSchema = table.getSchemaName().name;
// process constraints
for (int i = 0; i < constraintCount; i++) {
constraint = constraints[i];
constraintName = constraint.getName().name;
switch (constraint.getConstraintType()) {
case SchemaObject.ConstraintTypes.CHECK : {
OrderedHashSet expressions =
constraint.getCheckColumnExpressions();
if (expressions == null) {
break;
}
iterator = expressions.iterator();
// calculate distinct column references
while (iterator.hasNext()) {
ExpressionColumn expr =
(ExpressionColumn) iterator.next();
HsqlName name = expr.getBaseColumnHsqlName();
if (name.type != SchemaObject.COLUMN) {
continue;
}