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package org.hsqldb.types;
import org.hsqldb.Constraint;
import org.hsqldb.Expression;
import org.hsqldb.HsqlNameManager;
import org.hsqldb.HsqlNameManager.HsqlName;
import org.hsqldb.SchemaObject;
import org.hsqldb.Session;
import org.hsqldb.Tokens;
import org.hsqldb.lib.ArrayUtil;
import org.hsqldb.lib.OrderedHashSet;
import org.hsqldb.rights.Grantee;
/**
* Class for DOMAIN and DISTINCT objects.<p>
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 1.9.0
* @since 1.9.0
*/
public class UserTypeModifier {
final HsqlName name;
final int schemaObjectType;
final Type dataType;
Constraint[] constraints = Constraint.emptyArray;
Expression defaultExpression;
boolean isNullable = true;
public UserTypeModifier(HsqlName name, int type, Type dataType) {
this.name = name;
this.schemaObjectType = type;
this.dataType = dataType;
}
public int schemaObjectType() {
return schemaObjectType;
}
public void addConstraint(Constraint c) {
int position = constraints.length;
constraints = (Constraint[]) ArrayUtil.resizeArray(constraints,
position + 1);
constraints[position] = c;
setNotNull();
}
public void removeConstraint(String name) {
for (int i = 0; i < constraints.length; i++) {
if (constraints[i].getName().name.equals(name)) {
constraints =
(Constraint[]) ArrayUtil.toAdjustedArray(constraints,
null, i, -1);
break;
}
}
setNotNull();
}
public Constraint getConstraint(String name) {
for (int i = 0; i < constraints.length; i++) {
if (constraints[i].getName().name.equals(name)) {
return constraints[i];
}
}
return null;
}
public Constraint[] getConstraints() {
return constraints;
}
public boolean isNullable() {
return isNullable;
}
public Expression getDefaultClause() {
return defaultExpression;
}
public void setDefaultClause(Expression defaultExpression) {
this.defaultExpression = defaultExpression;
}
public void removeDefaultClause() {
defaultExpression = null;
}
private void setNotNull() {
isNullable = true;
for (int i = 0; i < constraints.length; i++) {
if (constraints[i].isNotNull()) {
isNullable = false;
}
}
}
// interface specific methods
public int getType() {
return schemaObjectType;
}
public HsqlName getName() {
return name;
}
public HsqlName getSchemaName() {
return name.schema;
}
public Grantee getOwner() {
return name.schema.owner;
}
public OrderedHashSet getReferences() {
if (constraints.length == 0) {
return null;
}
OrderedHashSet set = new OrderedHashSet();
for (int i = 0; i < constraints.length; i++) {
OrderedHashSet subSet = constraints[i].getReferences();
if (subSet != null) {
set.addAll(subSet);
}
}
return set;
}
public final OrderedHashSet getComponents() {
if (constraints == null) {
return null;
}
OrderedHashSet set = new OrderedHashSet();
set.addAll(constraints);
return set;
}
public void compile(Session session) {
for (int i = 0; i < constraints.length; i++) {
constraints[i].compile(session);
}
}
public String getSQL() {
StringBuffer sb = new StringBuffer();
if (schemaObjectType == SchemaObject.TYPE) {
sb.append(Tokens.T_CREATE).append(' ').append(
Tokens.T_TYPE).append(' ');
sb.append(name.getSchemaQualifiedStatementName());
sb.append(' ').append(Tokens.T_AS).append(' ');
sb.append(dataType.getDefinition());
} else {
sb.append(Tokens.T_CREATE).append(' ').append(
Tokens.T_DOMAIN).append(' ');
sb.append(name.getSchemaQualifiedStatementName());
sb.append(' ').append(Tokens.T_AS).append(' ');
sb.append(dataType.getDefinition());
if (defaultExpression != null) {
sb.append(' ').append(Tokens.T_DEFAULT).append(' ');
sb.append(defaultExpression.getSQL());
}
for (int i = 0; i < constraints.length; i++) {
sb.append(' ').append(Tokens.T_CONSTRAINT).append(' ');
sb.append(constraints[i].getName().statementName).append(' ');
sb.append(Tokens.T_CHECK).append('(').append(
constraints[i].getCheckSQL()).append(')');
}
}
return sb.toString();
}
}