fixes #193

Author: wumpz

README.md

@@ -38,6 +38,7 @@ Also I would like to know about needed examples or documentation stuff.
 
 ## Extensions in the latest SNAPSHOT version 0.9.5
 
+* support for **INSERT LOW_PRIORITY INTO**
 * support for **ORDER BY** and **LIMIT** in **UPDATE** and **DELETE** statements
 
 ~~~

src/main/java/net/sf/jsqlparser/statement/insert/Insert.java

@@ -48,7 +48,7 @@ public class Insert implements Statement {
     private boolean useDuplicate = false;
     private List<Column> duplicateUpdateColumns;
     private List<Expression> duplicateUpdateExpressionList;
-    private String modifierPriority = null;
+    private InsertModifierPriority modifierPriority = null;
     private boolean modifierIgnore = false;
 
     private boolean returningAllColumns = false;
@@ -158,11 +158,11 @@ public void setDuplicateUpdateExpressionList(List<Expression> duplicateUpdateExp
         this.duplicateUpdateExpressionList = duplicateUpdateExpressionList;
     }
 
-    public String getModifierPriority() {
+    public InsertModifierPriority getModifierPriority() {
         return modifierPriority;
     }
 
-    public void setModifierPriority(String modifierPriority) {
+    public void setModifierPriority(InsertModifierPriority modifierPriority) {
         this.modifierPriority = modifierPriority;
     }
 
@@ -180,7 +180,7 @@ public String toString() {
 
         sql.append("INSERT ");
         if(modifierPriority != null){
-            sql.append(modifierPriority + " ");
+            sql.append(modifierPriority.name()).append(" ");
         }
         if(modifierIgnore){
             sql.append("IGNORE ");

src/main/java/net/sf/jsqlparser/statement/insert/InsertModifierPriority.java

@@ -0,0 +1,48 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2015 JSQLParser
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 2.1 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Lesser Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Lesser Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/lgpl-2.1.html>.
+ * #L%
+ */
+/*
+ * Copyright (C) 2015 JSQLParser.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301  USA
+ */
+package net.sf.jsqlparser.statement.insert;
+
+/**
+ *
+ * @author tw
+ */
+public enum InsertModifierPriority {
+    LOW_PRIORITY, DELAYED, HIGH_PRIORITY, IGNORE
+}

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

@@ -30,6 +30,7 @@
 import net.sf.jsqlparser.expression.operators.relational.MultiExpressionList;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.statement.insert.Insert;
+import net.sf.jsqlparser.statement.insert.InsertModifierPriority;
 import net.sf.jsqlparser.statement.select.SelectExpressionItem;
 import net.sf.jsqlparser.statement.select.SelectVisitor;
 import net.sf.jsqlparser.statement.select.SubSelect;
@@ -76,7 +77,7 @@ public void setBuffer(StringBuilder buffer) {
     public void deParse(Insert insert) {
         buffer.append("INSERT ");
         if(insert.getModifierPriority() != null){
-            buffer.append(insert.getModifierPriority() + " ");
+            buffer.append(insert.getModifierPriority()).append(" ");
         }
         if(insert.isModifierIgnore()){
             buffer.append("IGNORE ");

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

@@ -472,14 +472,14 @@ Insert Insert():
     List<Column> duplicateUpdateColumns = null;
     List<Expression> duplicateUpdateExpressionList = null;
     Token tk = null;
-    String modifierPriority = null;
+    InsertModifierPriority modifierPriority = null;
     boolean modifierIgnore = false;
 }
 {
     <K_INSERT>
     [(tk = <K_LOW_PRIORITY> | tk = <K_DELAYED> | tk = <K_HIGH_PRIORITY>)
     {if (tk!=null)
-    	modifierPriority = tk.image.toUpperCase();
+    	modifierPriority = InsertModifierPriority.valueOf(tk.image.toUpperCase());
     }]
     [<K_IGNORE>{ modifierIgnore = true; }]
     [<K_INTO>] table=Table()

src/test/java/net/sf/jsqlparser/test/insert/InsertTest.java

@@ -159,8 +159,17 @@ public void testModifierIgnore() throws JSQLParserException {
     }
 
     @Test
-    public void testModifierPriority() throws JSQLParserException {
+    public void testModifierPriority1() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("INSERT DELAYED INTO kvPair (value, key) VALUES (?, ?)");
+    }
+    
+    @Test
+    public void testModifierPriority2() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed("INSERT LOW_PRIORITY INTO kvPair (value, key) VALUES (?, ?)");
     }
+    
+    @Test
+    public void testModifierPriority3() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("INSERT HIGH_PRIORITY INTO kvPair (value, key) VALUES (?, ?)");
+    }
 }