#fixes 480

Author: wumpz

src/main/java/net/sf/jsqlparser/statement/StatementVisitor.java

@@ -75,4 +75,6 @@ public interface StatementVisitor {
 
     void visit(Upsert upsert);
 
+    void visit(UseStatement use);
+
 }

src/main/java/net/sf/jsqlparser/statement/StatementVisitorAdapter.java

@@ -126,6 +126,9 @@ public void visit(AlterView alterView) {
 
     @Override
     public void visit(Upsert upsert) {
-        
+    }
+
+    @Override
+    public void visit(UseStatement use) {
     }
 }

src/main/java/net/sf/jsqlparser/statement/UseStatement.java

@@ -0,0 +1,53 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2017 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%
+ */
+package net.sf.jsqlparser.statement;
+
+/**
+ *
+ * @author toben
+ */
+public class UseStatement implements Statement {
+
+    private String name;
+
+    public UseStatement(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    @Override
+    public String toString() {
+        return "USE " + name;
+    }
+
+    @Override
+    public void accept(StatementVisitor statementVisitor) {
+        statementVisitor.visit(this);
+    }
+}

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

@@ -96,6 +96,7 @@
 import net.sf.jsqlparser.statement.Statement;
 import net.sf.jsqlparser.statement.StatementVisitor;
 import net.sf.jsqlparser.statement.Statements;
+import net.sf.jsqlparser.statement.UseStatement;
 import net.sf.jsqlparser.statement.alter.Alter;
 import net.sf.jsqlparser.statement.create.index.CreateIndex;
 import net.sf.jsqlparser.statement.create.table.CreateTable;
@@ -749,4 +750,8 @@ public void visit(Upsert upsert) {
             visit(upsert.getSelect());
         }
     }
+
+    @Override
+    public void visit(UseStatement use) {
+    }
 }

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

@@ -27,6 +27,7 @@
 import net.sf.jsqlparser.statement.SetStatement;
 import net.sf.jsqlparser.statement.StatementVisitor;
 import net.sf.jsqlparser.statement.Statements;
+import net.sf.jsqlparser.statement.UseStatement;
 import net.sf.jsqlparser.statement.alter.Alter;
 import net.sf.jsqlparser.statement.create.index.CreateIndex;
 import net.sf.jsqlparser.statement.create.table.CreateTable;
@@ -215,4 +216,9 @@ public void visit(Upsert upsert) {
         UpsertDeParser upsertDeParser = new UpsertDeParser(expressionDeParser, selectDeParser, buffer);
         upsertDeParser.deParse(upsert);
     }
+
+    @Override
+    public void visit(UseStatement use) {
+        new UseStatementDeParser(buffer).deParse(use);
+    }
 }

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

@@ -0,0 +1,45 @@
+/*
+ * #%L
+ * JSQLParser library
+ * %%
+ * Copyright (C) 2004 - 2017 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%
+ */
+package net.sf.jsqlparser.util.deparser;
+
+import net.sf.jsqlparser.statement.UseStatement;
+
+public class UseStatementDeParser {
+
+    private StringBuilder buffer;
+
+    public UseStatementDeParser(StringBuilder buffer) {
+        this.buffer = buffer;
+    }
+
+    public StringBuilder getBuffer() {
+        return buffer;
+    }
+
+    public void setBuffer(StringBuilder buffer) {
+        this.buffer = buffer;
+    }
+
+    public void deParse(UseStatement set) {
+        buffer.append("USE ").append(set.getName());
+    }
+}

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

@@ -397,6 +397,8 @@ Statement SingleStatement() :
         |
         stm = Set()
         |
+        stm = Use()
+        |
         stm = Commit() 
         )
     } catch (ParseException e) {
@@ -456,6 +458,16 @@ SetStatement Set(): {
     }
 }
 
+UseStatement Use(): {
+    String name;
+}
+{
+    <K_USE> name = RelObjectNameExt()
+    {
+        return new UseStatement(name);
+    }
+}
+
 Update Update():
 {
     Update update = new Update();

src/test/java/net/sf/jsqlparser/statement/UseStatementTest.java

@@ -0,0 +1,36 @@
+/*
+ * 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;
+
+import net.sf.jsqlparser.JSQLParserException;
+import static net.sf.jsqlparser.test.TestUtils.assertSqlCanBeParsedAndDeparsed;
+import org.junit.Test;
+
+/**
+ *
+ * @author toben
+ */
+public class UseStatementTest {
+
+
+    @Test
+    public void testSimpleUse() throws JSQLParserException {
+        assertSqlCanBeParsedAndDeparsed("USE mydatabase");
+    }
+}