/**
* Returns the list of parameter values for a prepared statement.
*
* @return the list of parameter values for a prepared statement
*/
@Override
public Object[] getParamValues() {
Object[] leftParams = left.getParamValues();
Object[] rightParams = right.getParamValues();
// Check
if (leftParams == null) return rightParams;
if (rightParams == null) return leftParams;
// Put them all together
Object[] allParams = new Object[leftParams.length + rightParams.length];
for (int i = 0; i < leftParams.length; i++) allParams[i] = leftParams[i];
for (int i = 0; i < rightParams.length; i++) allParams[leftParams.length + i] = rightParams[i];
// return Params
return allParams;
}
/**
* Creates the SQL-Command.
*
* @param buf the SQL-Command
*/
@Override
public void getSelect(StringBuilder buf) {
// the left part
left.clearOrderBy();
if (!(left instanceof DBCombinedCmd)) {
buf.append("(");
left.getSelect(buf);
buf.append(")");
} else left.getSelect(buf);
// concat keyword
buf.append("\r\n");
buf.append(keyWord);
buf.append("\r\n");
// the right part
right.clearOrderBy();
if (!(right instanceof DBCombinedCmd)) {
buf.append("(");
right.getSelect(buf);
buf.append(")");
} else right.getSelect(buf);
// done
// Add optional Order by statement
if (orderBy != null) { // Having
buf.append("\r\nORDER BY ");
addListExpr(buf, orderBy, CTX_DEFAULT, ", ");
}
}
/**
* Calls the method dbDBCommandExpr.getSelectExprList from the private variable 'left'. Returns a
* array of all DBColumnExpr object of the Vector: 'select'.
*
* @see org.apache.empire.db.DBCommandExpr#getSelectExprList()
* @return returns an array of all DBColumnExpr object of the Vector: 'select'
*/
@Override
public DBColumnExpr[] getSelectExprList() {
// DebugMsg(2, "Check: getSelectExprList() for DBCombinedCmd");
return left.getSelectExprList();
}
/** @see org.apache.empire.db.DBExpr#addReferencedColumns(Set) */
@Override
public void addReferencedColumns(Set<DBColumn> list) {
left.addReferencedColumns(list);
right.addReferencedColumns(list);
}
/**
* Returns the current DBDatabase object.
*
* @return the current DBDatabase object
*/
@Override
public DBDatabase getDatabase() {
return left.getDatabase();
}
@Override
public boolean isValid() {
return (left.isValid() && right.isValid());
}
