Fix issue #563: subjoin allows only one inner join, this should be a … (#564)

* Fix issue #563: subjoin allows only one inner join, this should be a list

* Fix failing Oracle tests because of confusion between subjoin and subselect.

Author: fjalvingh

src/main/java/net/sf/jsqlparser/statement/select/SubJoin.java

@@ -23,15 +23,17 @@
 
 import net.sf.jsqlparser.expression.Alias;
 
+import java.util.List;
+
 /**
- * A table created by "(tab1 join tab2)".
+ * A table created by "(tab1 [join tab2]* )".
  */
 public class SubJoin implements FromItem {
 
     private FromItem left;
-    private Join join;
     private Alias alias;
     private Pivot pivot;
+    private List<Join> joinList;
 
     @Override
     public void accept(FromItemVisitor fromItemVisitor) {
@@ -46,12 +48,12 @@ public void setLeft(FromItem l) {
         left = l;
     }
 
-    public Join getJoin() {
-        return join;
+    public List<Join> getJoinList() {
+        return joinList;
     }
 
-    public void setJoin(Join j) {
-        join = j;
+    public void setJoinList(List<Join> joinList) {
+        this.joinList = joinList;
     }
 
     @Override
@@ -76,8 +78,13 @@ public void setAlias(Alias alias) {
 
     @Override
     public String toString() {
-        return "(" + left + " " + join + ")"
-                + ((alias != null) ? alias.toString() : "")
-                + ((pivot != null) ? " " + pivot : "");
+        StringBuilder sb = new StringBuilder();
+        sb.append("(").append(left);
+        for(Join j : joinList) {
+            sb.append(" ").append(j);
+        }
+
+        sb.append(")").append((alias != null) ? (" " + alias.toString()) : "").append((pivot != null) ? " " + pivot : "");
+        return sb.toString();
     }
 }

src/main/java/net/sf/jsqlparser/util/TablesNamesFinder.java

@@ -458,7 +458,9 @@ public void visit(AnyComparisonExpression anyComparisonExpression) {
     @Override
     public void visit(SubJoin subjoin) {
         subjoin.getLeft().accept(this);
-        subjoin.getJoin().getRightItem().accept(this);
+        for(Join join : subjoin.getJoinList()) {
+            join.getRightItem().accept(this);
+        }
     }
 
     @Override

src/main/java/net/sf/jsqlparser/util/deparser/SelectDeParser.java

@@ -329,7 +329,9 @@ public void setExpressionVisitor(ExpressionVisitor visitor) {
     public void visit(SubJoin subjoin) {
         buffer.append("(");
         subjoin.getLeft().accept(this);
-        deparseJoin(subjoin.getJoin());
+        for(Join join : subjoin.getJoinList()) {
+            deparseJoin(join);
+        }
         buffer.append(")");
 
         if (subjoin.getPivot() != null) {

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -1558,11 +1558,13 @@ FromItem SubJoin():
 {
     FromItem fromItem = null;
     Join join = null;
+    List joinList = null;
     SubJoin subJoin = new SubJoin();
 }
 {
     fromItem=FromItem() { subJoin.setLeft(fromItem); }
-    join=JoinerExpression() { subJoin.setJoin(join); }
+//    join=JoinerExpression() { subJoin.setJoin(join); }
+	joinList=SubJoinsList() { subJoin.setJoinList(joinList); }
 
     {
         return subJoin;
@@ -1581,6 +1583,19 @@ List<Join> JoinsList():
     { return joinsList; }
 }
 
+List SubJoinsList():
+{
+    List<Join> joinsList = new ArrayList<Join>();
+    Join join = null;
+}
+{
+
+    (join=JoinerExpression() { joinsList.add(join); })+
+
+    { return joinsList; }
+}
+
+
 Join JoinerExpression() #JoinerExpression:
 {
     Join join = new Join();

src/test/java/net/sf/jsqlparser/test/select/SpecialOracleTest.java

@@ -18,20 +18,21 @@
  */
 package net.sf.jsqlparser.test.select;
 
-import java.io.File;
-import java.io.IOException;
-import java.util.logging.Level;
-import java.util.logging.Logger;
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.parser.CCJSqlParserUtil;
 import net.sf.jsqlparser.statement.Statement;
-
-import static net.sf.jsqlparser.test.TestUtils.*;
 import org.apache.commons.io.FileUtils;
-import static org.junit.Assert.assertTrue;
 import org.junit.ComparisonFailure;
 import org.junit.Test;
 
+import java.io.File;
+import java.io.IOException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import static net.sf.jsqlparser.test.TestUtils.assertSqlCanBeParsedAndDeparsed;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tries to parse and deparse all statments in net.sf.jsqlparser.test.oracle-tests.
  *
@@ -63,6 +64,7 @@ public void testAllSqlsParseDeparse() throws IOException {
                     success++;
                     LOG.info("   -> SUCCESS");
                 } catch (JSQLParserException ex) {
+                    ex.printStackTrace();
                     //LOG.log(Level.SEVERE, null, ex);
                     LOG.log(Level.INFO, "   -> PROBLEM {0}", ex.toString());
                 } catch (Exception ex) {