fixes #944

Author: wumpz

src/main/java/net/sf/jsqlparser/expression/Function.java

@@ -9,6 +9,8 @@
  */
 package net.sf.jsqlparser.expression;
 
+import java.util.Arrays;
+import java.util.List;
 import net.sf.jsqlparser.expression.operators.relational.ExpressionList;
 import net.sf.jsqlparser.expression.operators.relational.NamedExpressionList;
 import net.sf.jsqlparser.parser.ASTNodeAccessImpl;
@@ -18,7 +20,7 @@
  */
 public class Function extends ASTNodeAccessImpl implements Expression {
 
-    private String name;
+    private List<String> nameparts;
     private ExpressionList parameters;
     private NamedExpressionList namedParameters;
     private boolean allColumns = false;
@@ -35,11 +37,19 @@ public void accept(ExpressionVisitor expressionVisitor) {
     }
 
     public String getName() {
-        return name;
+        return nameparts == null ? null : String.join(".", nameparts);
+    }
+    
+    public List<String> getMultipartName() {
+        return nameparts;
     }
 
     public void setName(String string) {
-        name = string;
+        nameparts = Arrays.asList(string);
+    }
+    
+    public void setName(List<String> string) {
+        nameparts = string;
     }
 
     public boolean isAllColumns() {
@@ -162,7 +172,7 @@ public String toString() {
             params = "()";
         }
 
-        String ans = name + "" + params + "";
+        String ans = getName() + "" + params + "";
 
         if (attribute != null) {
             ans += "." + attribute.toString();

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

@@ -1095,7 +1095,7 @@ List<String> RelObjectNameList() : {
     String token = null;
     List<String> data = new ArrayList<String>();
 } {
-    token = RelObjectName() { data.add(token); }
+    token = RelObjectNameExt() { data.add(token); }
     ( LOOKAHEAD (2) "." ("." { data.add(null); })* token = RelObjectNameExt2() { data.add(token); } ) *
 
     { return data; }
@@ -3474,7 +3474,7 @@ Function Function() #Function:
 
 Function InternalFunction(Function retval) :
 {
-    String funcName = null;
+    List<String> funcName;
     String tmp = null;
     List<Expression> expressions = new ArrayList<Expression>();
     ExpressionList expressionList = null;
@@ -3487,9 +3487,11 @@ Function InternalFunction(Function retval) :
     boolean ignoreNulls = false;
 }
 {
-    funcName=RelObjectNameExt()
-
+    /*funcName=RelObjectNameExt()
     [ "." tmp=RelObjectNameExt() { funcName+= "." + tmp; } ["." tmp=RelObjectNameExt() { funcName+= "." + tmp; }]]
+    */
+    funcName = RelObjectNameList()
+
     "(" [ [ LOOKAHEAD(2)(<K_DISTINCT> { retval.setDistinct(true); } | <K_ALL> { retval.setAllColumns(true); }) ]
         ( LOOKAHEAD(4)
             "*" { retval.setAllColumns(true); }
@@ -3716,7 +3718,7 @@ CreateTable CreateTable():
     (parameter = CreateParameter() { createOptions.addAll(parameter); })*
 
     <K_TABLE> 
-    [ <K_IF> <K_NOT> <K_EXISTS> { createTable.setIfNotExists(true); }]
+    [ LOOKAHEAD(2) <K_IF> <K_NOT> <K_EXISTS> { createTable.setIfNotExists(true); }]
     table=Table()
     [
         ("("
@@ -4116,7 +4118,7 @@ Drop Drop():
     )
     { drop.setType(tk.image); }
 
-    [<K_IF> <K_EXISTS> {drop.setIfExists(true);} ]
+    [ LOOKAHEAD(2) <K_IF> <K_EXISTS> {drop.setIfExists(true);} ]
 
     name = Table() { drop.setName(name); }
     ((tk=<S_IDENTIFIER> | tk=<K_CASCADE> | tk=<K_RESTRICT> ) { dropArgs.add(tk.image); })*

src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java

@@ -3452,6 +3452,11 @@ public void testMultiPartNamesIssue163() throws JSQLParserException {
     public void testMultiPartNamesIssue608() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("SELECT @@sessions.tx_read_only");
     }
+    
+    @Test
+    public void testMultiPartNamesForFunctionsIssue944() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("SELECT pg_catalog.now()");
+    }
 
 //    Teradata allows SEL to be used in place of SELECT
 //    Deparse to the non-contracted form