/**
* Overridden to generate add table statement to have domain/type level
* check constraints be added on the table level. The reason why it is being
* generated on the table level is because SQL Server does not allow
* multiple named check constraints on a single column. Only one named or
* unnamed check constraint per column is allowed.
*
* Since check constraints from multiple objects are being combined into the
* table level, we must ensure that there are no name conflicts by
* prepending tags to identify which SQLObject type and physical name the
* check constraint is actually supposed to be applied on. e.g.
* col_<column-name>_<constraint-name> or table_<table-name>_<constraint-name>.
* This is especially important since actual table level check constraints
* will be added in the future.
*/
@Override
public void addTable(SQLTable t) throws SQLException, SQLObjectException {
Map<String, SQLObject> colNameMap =
new HashMap<String, SQLObject>(); // for detecting duplicate column names
// generate a new physical name if necessary
createPhysicalName(topLevelNames, t); // also adds generated physical name to the map
print("\nCREATE TABLE ");
print(toQualifiedName(t));
println(" (");
boolean firstCol = true;
List<SQLColumn> columns = t.getColumns();
for (SQLColumn c : columns) {
if (!firstCol) println(",");
print(" ");
print(columnDefinition(c, colNameMap));
firstCol = false;
}
SQLIndex pk = t.getPrimaryKeyIndex();
if (pk.getChildCount() > 0) {
print(",\n");
print(" ");
writePKConstraintClause(pk);
}
for (SQLColumn c : columns) {
UserDefinedSQLType type = c.getUserDefinedSQLType();
List<SQLCheckConstraint> checkConstraints;
SQLTypeConstraint constraintType = type.getConstraintType(getPlatformName());
if (constraintType == null) {
constraintType = type.getDefaultPhysicalProperties().getConstraintType();
checkConstraints = type.getDefaultPhysicalProperties().getCheckConstraints();
} else {
checkConstraints = type.getCheckConstraints(getPlatformName());
}
if (constraintType == SQLTypeConstraint.CHECK) {
print(",\n");
print(columnCheckConstraint(c, checkConstraints));
}
}
print("\n)");
endStatement(StatementType.CREATE, t);
addComment(t, true);
}
/**
* SQL Server does not allow multiple named check constraints on the column level. Only one named
* or unnamed check constraint is allowed. Instead, we must add them on the table level.
*
* @see #addTable(SQLTable)
*/
@Override
protected String columnDefinition(SQLColumn c, Map<String, SQLObject> colNameMap) {
StringBuffer def = new StringBuffer();
// Column name
def.append(createPhysicalName(colNameMap, c));
def.append(" ");
def.append(columnType(c));
UserDefinedSQLType type = c.getUserDefinedSQLType();
String defaultValue = type.getDefaultValue(getPlatformName());
if (defaultValue != null && !defaultValue.equals("")) {
def.append(" ");
def.append("DEFAULT ");
def.append(defaultValue);
}
def.append(columnNullability(c));
List<SQLEnumeration> enumerations;
SQLTypeConstraint constraintType = type.getConstraintType(getPlatformName());
if (constraintType == null) {
constraintType = type.getDefaultPhysicalProperties().getConstraintType();
enumerations =
type.getDefaultPhysicalProperties().getChildrenWithoutPopulating(SQLEnumeration.class);
} else {
enumerations = type.getEnumerations(getPlatformName());
}
// Add enumeration.
if (constraintType == SQLTypeConstraint.ENUM) {
String columnEnumeration = columnEnumeration(c, enumerations);
if (columnEnumeration != null && columnEnumeration.length() > 0) {
def.append(" " + columnEnumeration);
}
}
logger.debug("column definition " + def.toString());
return def.toString();
}