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package common;
import gudusoft.gsqlparser.stmt.TSelectSqlStatement;
import junit.framework.TestCase;
import gudusoft.gsqlparser.*;
import gudusoft.gsqlparser.nodes.TExpression;
import gudusoft.gsqlparser.nodes.TJoin;
import gudusoft.gsqlparser.nodes.TJoinItem;
public class testJoins extends TestCase {
private TGSqlParser parser = null;
protected void setUp() throws Exception {
super.setUp();
parser = new TGSqlParser(EDbVendor.dbvmssql);
}
protected void tearDown() throws Exception {
parser = null;
super.tearDown();
}
public void testSearchToken(){
parser.sqltext = "SELECT * \n" +
"FROM \n" +
" sysobjects AS so\n" +
"\n" +
"--// We are creating one record for each load the suborder is on\n" +
"LEFT OUTER JOIN\n" +
"--// We are creating one record for each load the suborder is on\n" +
"\n" +
"--// We are creating one record for each load the suborder is on\n" +
"--// We are creating one record for each load the suborder is on\n" +
" (\n" +
" syscomments AS SC WITH (NOLOCK)\n" +
" ) ON\n" +
" so.id = sc.id;";
assertTrue(parser.parse() == 0);
TJoin lcJoin = parser.sqlstatements.get(0).joins.getJoin(0);
// lookup left keyword backword
TJoinItem lcitem = lcJoin.getJoinItems().getJoinItem(0);
TSourceToken st = lcitem.getStartToken();
TSourceToken left = st.searchToken(TBaseType.rrw_left,-5);
assertTrue(left.toString().equalsIgnoreCase("left"));
//System.out.println(lcitem.toString());
}
public void testStartToken(){
parser.sqltext = "SELECT p.name AS product,\n" +
" p.listprice AS 'List Price',\n" +
" p.discount AS 'discount' \n" +
"FROM \n" +
" production1.product p \n" +
" left /*fdf */ JOIN production2.productsubcategory s ON p.productsubcategoryid = s.productsubcategoryid \n" +
"WHERE s.name LIKE product \n" +
" AND p.listprice < maxprice; ";
// System.out.println(parser.sqltext);
assertTrue(parser.parse() == 0);
//System.out.println(parser.sqlstatements.get(0).joins.size());
TJoin lcJoin = parser.sqlstatements.get(0).joins.getJoin(0);
TJoinItem lcitem = lcJoin.getJoinItems().getJoinItem(0);
assertTrue(lcJoin.getStartToken().toString().equalsIgnoreCase("production1"));
assertTrue(lcJoin.getEndToken().toString().equalsIgnoreCase("productsubcategoryid"));
assertTrue(lcitem.getStartToken().toString().equalsIgnoreCase("production2"));
assertTrue(lcitem.getEndToken().toString().equalsIgnoreCase("productsubcategoryid"));
assertTrue(lcitem.getOnCondition().getStartToken().toString().equalsIgnoreCase("p"));
assertTrue(lcitem.getOnCondition().getEndToken().toString().equalsIgnoreCase("productsubcategoryid"));
// get "left" keyword before join
TSourceToken st = lcitem.getStartToken();
if (lcitem.getJoinType() == EJoinType.left){
// search left keyword before the token of lctitem using token code of left keyword.
// - means search before the first token of lctitem, range is 100 tokens
// try to search token by token code to gain better performance,
// token code of most important keywords can be found in syntax like:TBaseType.rrw_XXXX
// if no token code defined for a keyword, you can search it by text of this keyword by setting targetTokenCode
// parameter to 0.
TSourceToken left = st.searchToken(TBaseType.rrw_left,-100);
// or
//TSourceToken left = st.searchToken("left",-100);
assertTrue(left.toString().equalsIgnoreCase("left"));
// System.out.println(left.toString());
}else{
// other join types:
// join_cross: cross join
// join_natural: natural join
// join_inner: [loop|hash|merge|remote] join, or [loop|hash|merge|remote] inner join
// join_full: full [loop|hash|merge|remote] join
// join_left: left [loop|hash|merge|remote] join
// join_right: right [loop|hash|merge|remote] join
// join_fullouter: full outer [loop|hash|merge|remote] join
// join_leftouter: left outer [loop|hash|merge|remote] join
// join_rightouter: right outer [loop|hash|merge|remote] join
// join_crossapply: cross apply
//join_outerapply: outer apply
// [loop|hash|merge|remote]
}
TSourceToken onCondition = lcitem.getOnCondition().getStartToken();
TSourceToken on = onCondition.searchToken(TBaseType.rrw_on,-100);
assertTrue(on.toString().equalsIgnoreCase("on"));
parser.sqltext = "select l.city,d.department_name\n" +
"from locations l join departments d using (location_id)";
assertTrue(parser.parse() == 0);
TJoin lcJoin2 = parser.sqlstatements.get(0).joins.getJoin(0);
TJoinItem lcitem2 = lcJoin2.getJoinItems().getJoinItem(0);
TSourceToken usingExpr = lcitem2.getUsingColumns().getStartToken();
TSourceToken using = usingExpr.searchToken(TBaseType.rrw_teradata_using,-100);
// TSourceToken using = usingExpr.searchToken("using",-100);
assertTrue(using.toString().equalsIgnoreCase("using"));
}
public void testMember1(){
parser.sqltext = "select f1 from a right join (c join c1 on c.f1 = c1.f1) c2 on a.f1=c2.f1";
assertTrue(parser.parse() == 0);
TJoin lcJoin = parser.sqlstatements.get(0).joins.getJoin(0);
assertTrue(lcJoin.getKind() == TBaseType.join_source_table );
assertTrue(lcJoin.getTable().toString().compareToIgnoreCase("a") == 0);
TJoinItem lcitem = lcJoin.getJoinItems().getJoinItem(0);
assertTrue(lcitem.getKind() == TBaseType.join_source_join );
assertTrue(lcitem.getJoinType() == EJoinType.right);
assertTrue(lcitem.getOnCondition().toString().compareToIgnoreCase("a.f1=c2.f1") == 0);
lcJoin = null;
parser.sqltext = "select f1 from a full join c using(f1,f2)";
assertTrue(parser.parse() == 0);
TJoin lcJoin1 = parser.sqlstatements.get(0).joins.getJoin(0);
assertTrue(lcJoin1.getKind() == TBaseType.join_source_table );
assertTrue(lcJoin1.getTable().toString().compareToIgnoreCase("a") == 0);
TJoinItem lcitem1 = lcJoin1.getJoinItems().getJoinItem(0);
assertTrue(lcitem1.getKind() == TBaseType.join_source_table );
assertTrue(lcitem1.getJoinType() == EJoinType.full);
assertTrue(lcitem1.getUsingColumns().toString().compareToIgnoreCase("f1,f2") == 0);
// System.out.println(lcitem.getJoin().getAliasClause().toString());
}
public void testMember(){
// test TJoin.getKind(), TJoin.getTable(), TJoin.getJoin()
parser.sqltext = "select f from t1";
assertTrue(parser.parse() == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getKind() == TBaseType.join_source_fake );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().toString().compareToIgnoreCase("t1") == 0);
parser.sqltext = "select f from t as t1 join t2 on t1.f1 = t2.f1";
assertTrue(parser.parse() == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getKind() == TBaseType.join_source_table );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().toString().compareToIgnoreCase("t") == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().getAliasClause().toString().compareToIgnoreCase("t1") == 0);
parser.sqltext = "select a_join.f1 from (a as a_alias left join a1 on a1.f1 = a_alias.f1 ) as a_join join b on a_join.f1 = b.f1;";
assertTrue(parser.parse() == 0);
TJoin lcJoin = parser.sqlstatements.get(0).joins.getJoin(0);
//System.out.println(lcJoin.getKind());
assertTrue(lcJoin.getKind() == TBaseType.join_source_join );
assertTrue(lcJoin.getJoin().toString().compareToIgnoreCase("(a as a_alias left join a1 on a1.f1 = a_alias.f1 )") == 0);
assertTrue(lcJoin.getJoin().getAliasClause().toString().compareToIgnoreCase("a_join") == 0);
assertTrue(lcJoin.getJoin().getJoinItems().getJoinItem(0).getJoinType() == EJoinType.left);
assertTrue(lcJoin.getJoinItems().getJoinItem(0).getJoinType() == EJoinType.join);
parser.sqltext = "select a_join.f1 from (a as a_alias left join a1 on a1.f1 = a_alias.f1 ) as a_join";
assertTrue(parser.parse() == 0);
TJoin lcJoin1 = parser.sqlstatements.get(0).joins.getJoin(0);
assertTrue(lcJoin1.getKind() == TBaseType.join_source_join );
assertTrue(lcJoin1.getJoin().toString().compareToIgnoreCase("(a as a_alias left join a1 on a1.f1 = a_alias.f1 )") == 0);
assertTrue(lcJoin1.getJoin().getAliasClause().toString().compareToIgnoreCase("a_join") == 0);
}
public void testDo1(){
parser.sqltext = "select f from t1,t2";
assertTrue(parser.parse() == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().toString().compareToIgnoreCase("t1") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(1).getTable().toString().compareToIgnoreCase("t2") == 0 );
parser.sqltext = "select f from t1 join t2 on t1.f1 = t2.f1";
assertTrue(parser.parse() == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().toString().compareToIgnoreCase("t1") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(0).getTable().toString().compareToIgnoreCase("t2") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(0).getOnCondition().toString().compareToIgnoreCase("t1.f1 = t2.f1") == 0 );
parser.sqltext = "select f from t1 join t2 on t1.f1 = t2.f1 join t3 on t1.f1 = t3.f1";
assertTrue(parser.parse() == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().toString().compareToIgnoreCase("t1") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(0).getTable().toString().compareToIgnoreCase("t2") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(0).getOnCondition().toString().compareToIgnoreCase("t1.f1 = t2.f1") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(1).getTable().toString().compareToIgnoreCase("t3") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(1).getOnCondition().toString().compareToIgnoreCase("t1.f1 = t3.f1") == 0 );
parser.sqltext = "select f from t1 join t2 using (f1,f2)";
assertTrue(parser.parse() == 0);
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getTable().toString().compareToIgnoreCase("t1") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(0).getTable().toString().compareToIgnoreCase("t2") == 0 );
assertTrue(parser.sqlstatements.get(0).joins.getJoin(0).getJoinItems().getJoinItem(0).getUsingColumns().toString().compareToIgnoreCase("f1,f2") == 0 );
}
public void testMember2(){
parser.sqltext = "select * \n" +
"FROM a AS alias_a \n" +
" RIGHT JOIN ( (b left outer join f on (b.f1=f.f2)) \n" +
" \t\t\t\t\tLEFT JOIN (c full outer join c1 on (c1.f1 = c.f1) and (c1.f2=c.f2)) \n" +
"\t\t\t\tON (b.b1 = c.c1) AND (b.b2 = c.c2)) \n" +
"\tON (a.a1 = b.b3) AND (a.a2 = b.b4);";
assertTrue(parser.parse() == 0);
//System.out.println(parser.sqltext);
TJoin lcJoin = parser.sqlstatements.get(0).joins.getJoin(0);
assertTrue(lcJoin.getKind() == TBaseType.join_source_table );
assertTrue(lcJoin.getTable().toString().compareToIgnoreCase("a") == 0);
assertTrue(lcJoin.getTable().getAliasClause().toString().compareToIgnoreCase("alias_a") == 0);
assertTrue(lcJoin.getJoinItems().size() == 1);
TJoinItem lcJoinItem = lcJoin.getJoinItems().getJoinItem(0);
assertTrue(lcJoinItem.getKind() == TBaseType.join_source_join);
//System.out.println(lcJoinItem.getOnCondition().toString());
assertTrue(lcJoinItem.getOnCondition().toString().compareToIgnoreCase("(a.a1 = b.b3) AND (a.a2 = b.b4)") == 0);
TJoin lcJoinItemJoin = lcJoinItem.getJoin();
assertTrue(lcJoinItemJoin.getKind() == TBaseType.join_source_join);
assertTrue(lcJoinItemJoin.getJoinItems().getJoinItem(0).getOnCondition().toString().compareToIgnoreCase("(b.b1 = c.c1) AND (b.b2 = c.c2)") == 0);
TJoin lcJoinItemJoinJoin = lcJoinItemJoin.getJoin();
assertTrue(lcJoinItemJoinJoin.getKind() == TBaseType.join_source_table);
assertTrue(lcJoinItemJoinJoin.getTable().toString().compareToIgnoreCase("b") == 0);
TJoinItem lcJoinItemJoinJoinJoinItem = lcJoinItemJoinJoin.getJoinItems().getJoinItem(0);
assertTrue(lcJoinItemJoinJoinJoinItem.getJoinType() == EJoinType.leftouter);
assertTrue(lcJoinItemJoinJoinJoinItem.getTable().toString().compareToIgnoreCase("f") == 0);
//System.out.println(lcJoinItemJoinJoinJoinItem.getOnCondition().toString());
assertTrue(lcJoinItemJoinJoinJoinItem.getOnCondition().toString().compareToIgnoreCase("(b.f1=f.f2)") == 0);
TJoinItem lcJoinItem2 = lcJoinItemJoin.getJoinItems().getJoinItem(0);
assertTrue(lcJoinItem2.getJoinType() == EJoinType.left);
assertTrue(lcJoinItem2.getKind() == TBaseType.join_source_join);
TJoin lcJoin2 = lcJoinItem2.getJoin();
assertTrue(lcJoin2.getTable().toString().compareToIgnoreCase("c") == 0);
assertTrue(lcJoin2.getJoinItems().getJoinItem(0).getJoinType() == EJoinType.fullouter);
assertTrue(lcJoin2.getJoinItems().getJoinItem(0).getOnCondition().toString().compareToIgnoreCase("(c1.f1 = c.f1) and (c1.f2=c.f2)") == 0);
}
public void testMySQLNaturalLeftOuter(){
TGSqlParser mySQLparser = new TGSqlParser(EDbVendor.dbvmysql);
mySQLparser.sqltext = "SELECT * FROM A NATURAL LEFT OUTER JOIN B;";
assertTrue(mySQLparser.parse() == 0);
TSelectSqlStatement select = (TSelectSqlStatement)mySQLparser.sqlstatements.get(0);
assertTrue(select.joins.getJoin(0).getTable().toString().equalsIgnoreCase("A"));
assertTrue(select.joins.getJoin(0).getJoinItems().getJoinItem(0).getJoinType() == EJoinType.natural_leftouter);
assertTrue(select.joins.getJoin(0).getJoinItems().getJoinItem(0).getTable().toString().equalsIgnoreCase("B"));
}
public void testMySQLNaturalJoin(){
TGSqlParser mySQLparser = new TGSqlParser(EDbVendor.dbvmysql);
mySQLparser.sqltext = "SELECT * FROM (emp NATURAL JOIN salary) NATURAL JOIN customer;";
assertTrue(mySQLparser.parse() == 0);
TSelectSqlStatement select = (TSelectSqlStatement)mySQLparser.sqlstatements.get(0);
assertTrue(select.joins.getJoin(0).getKind() == TBaseType.join_source_join);
assertTrue(select.joins.getJoin(0).getJoin().getTable().toString().equalsIgnoreCase("emp"));
TJoinItem ji = select.joins.getJoin(0).getJoin().getJoinItems().getJoinItem(0);
assertTrue(ji.getJoinType() == EJoinType.natural);
assertTrue(ji.getTable().toString().equalsIgnoreCase("salary"));
TJoinItem ji2 = select.joins.getJoin(0).getJoinItems().getJoinItem(0);
assertTrue(ji2.getJoinType() == EJoinType.natural);
assertTrue(ji2.getTable().toString().equalsIgnoreCase("customer"));
}
public void testModifyJoinCondition(){
parser.sqltext = "select f from t1 join t2 on t1.f1 = t2.f1";
assertTrue(parser.parse() == 0);
TSelectSqlStatement select = (TSelectSqlStatement) parser.sqlstatements.get(0);
TExpression condition = select.joins.getJoin(0).getJoinItems().getJoinItem(0).getOnCondition();
condition.setString("t1.col3 = t2.col5");
// System.out.println(select.toString());
assertTrue(select.toString().equalsIgnoreCase("select f from t1 join t2 on t1.col3 = t2.col5"));
}
}