[#1972] Move MySQLFactory.md5() to Factory and simulate it for Oracle

jOOQ-test/src/org/jooq/test/_/testcases/FunctionTests.java

@@ -89,6 +89,7 @@ import static org.jooq.impl.Factory.log;
 import static org.jooq.impl.Factory.lower;
 import static org.jooq.impl.Factory.lpad;
 import static org.jooq.impl.Factory.ltrim;
+import static org.jooq.impl.Factory.md5;
 import static org.jooq.impl.Factory.minute;
 import static org.jooq.impl.Factory.month;
 import static org.jooq.impl.Factory.nullif;
@@ -591,6 +592,34 @@ extends BaseTest<A, AP, B, S, B2S, BS, L, X, DATE, BOOL, D, T, U, I, IPK, T725,
         }
     }
 
+    @Test
+    public void testFunctionsOnStrings_HashFunctions() throws Exception {
+
+        // MD5
+        switch (getDialect()) {
+            case ASE:
+            case CUBRID:
+            case DB2:
+            case DERBY:
+            case FIREBIRD:
+            case H2:
+            case HSQLDB:
+            case INGRES:
+            case POSTGRES:
+            case SQLITE:
+            case SQLSERVER:
+            case SYBASE:
+                log.info("SKIPPING", "MD5 function test");
+                break;
+
+            case MYSQL:
+            case ORACLE:
+            default:
+                assertEquals("900150983cd24fb0d6963f7d28e17f72", create().select(md5("abc")).fetchOne(0));
+                break;
+        }
+    }
+
     @Test
     public void testFunctionsOnNumbers() throws Exception {
 

jOOQ-test/src/org/jooq/test/jOOQAbstractTest.java

@@ -1588,6 +1588,11 @@ public abstract class jOOQAbstractTest<
         new FunctionTests(this).testFunctionsOnStrings_ASCII();
     }
 
+    @Test
+    public void testFunctionsOnStrings_HashFunctions() throws Exception {
+        new FunctionTests(this).testFunctionsOnStrings_HashFunctions();
+    }
+
     @Test
     public void testFunctionPosition() throws Exception {
         new FunctionTests(this).testFunctionPosition();

jOOQ/src/main/java/org/jooq/impl/Factory.java

@@ -3990,6 +3990,30 @@ public class Factory {
         return new Function<Integer>(Term.OCTET_LENGTH, SQLDataType.INTEGER, nullSafe(field));
     }
 
+    // ------------------------------------------------------------------------
+    // XXX Hash function factory
+    // ------------------------------------------------------------------------
+
+    /**
+     * Get the MySQL-specific <code>MD5()</code> function
+     * <p>
+     * Other databases may simulate this, where available
+     */
+    @Support({ MYSQL })
+    public static Field<String> md5(String string) {
+        return md5(val(string));
+    }
+
+    /**
+     * Get the MySQL-specific <code>MD5()</code> function
+     * <p>
+     * Other databases may simulate this, where available
+     */
+    @Support({ MYSQL })
+    public static Field<String> md5(Field<String> string) {
+        return new MD5(nullSafe(string));
+    }
+
     // ------------------------------------------------------------------------
     // XXX Date and time functions
     // ------------------------------------------------------------------------

jOOQ/src/main/java/org/jooq/impl/MD5.java

@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) 2009-2012, Lukas Eder, lukas.eder@gmail.com
+ * All rights reserved.
+ *
+ * This software is licensed to you under the Apache License, Version 2.0
+ * (the "License"); You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * . Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ *
+ * . Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * . Neither the name "jOOQ" nor the names of its contributors may be
+ *   used to endorse or promote products derived from this software without
+ *   specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.jooq.impl;
+
+import static org.jooq.impl.Factory.field;
+
+import org.jooq.Configuration;
+import org.jooq.Field;
+
+/**
+ * @author Lukas Eder
+ */
+class MD5 extends AbstractFunction<String> {
+
+    /**
+     * Generated UID
+     */
+    private static final long   serialVersionUID = -7273879239726265322L;
+
+    private final Field<String> argument;
+
+    MD5(Field<String> argument) {
+        super("md5", SQLDataType.VARCHAR, argument);
+
+        this.argument = argument;
+    }
+
+    @Override
+    final Field<String> getFunction0(Configuration configuration) {
+        switch (configuration.getDialect()) {
+            case ORACLE:
+                return field("{lower}({rawtohex}({sys}.{dbms_obfuscation_toolkit}.{md5}(input_string => {0})))", SQLDataType.VARCHAR, argument);
+            case MYSQL:
+            default:
+                return field("{md5}({0})", SQLDataType.VARCHAR, argument);
+        }
+    }
+}

jOOQ/src/main/java/org/jooq/util/mysql/MySQLFactory.java

@@ -215,20 +215,6 @@ public class MySQLFactory extends Factory {
         return function("uncompressed_length", Integer.class, string);
     }
 
-    /**
-     * Get the MySQL-specific <code>MD5()</code> function
-     */
-    public static Field<String> md5(String string) {
-        return md5(val(string));
-    }
-
-    /**
-     * Get the MySQL-specific <code>MD5()</code> function
-     */
-    public static Field<String> md5(Field<String> string) {
-        return function("md5", String.class, string);
-    }
-
     /**
      * Get the MySQL-specific <code>SHA1()</code> function
      */