import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
+import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
+import java.math.BigInteger;
import java.net.URL;
import java.net.URLClassLoader;
+import java.security.MessageDigest;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
*/
public class Hbm2DdlMojo extends AbstractMojo
{
+ public final static String EXPORT_SKIPPED_PROPERTY = "hibernate.export.skipped";
+
public final static String DRIVER_CLASS = "hibernate.connection.driver_class";
public final static String URL = "hibernate.connection.url";
public final static String USERNAME = "hibernate.connection.username";
public final static String PASSWORD = "hibernate.connection.password";
public final static String DIALECT = "hibernate.dialect";
- private final static String TIMESTAMPS = "schema.timestamp";
+ private final static String MD5S = "schema.md5s";
/**
- * The project whose project files to create.
+ * The maven project.
*
* @parameter expression="${project}"
* @required
private MavenProject project;
/**
- * Directories to scan.
+ * Build-directory.
+ *
+ * @parameter expression="${project.build.directory}"
+ */
+ private String buildDirectory;
+
+ /**
+ * Class-directory to scan.
*
* @parameter expression="${project.build.outputDirectory}"
*/
/**
* Skip execution
*
- * @parameter expression="${maven.test.skip}"
+ * @parameter expression="${maven.test.skip}" default-value="false"
*/
private boolean skip;
private String hibernateDialect;
/**
- * Hibernate configuration file.
+ * Path to Hibernate configuration file.
*
* @parameter default-value="${project.build.outputDirectory}/hibernate.properties"
*/
* <li><strong>SCRIPT</strong> export schema to SQL-script</li>
* <li><strong>BOTH</strong></li>
* </ul>
- * @parameter default-value="EXPORT"
+ * @parameter expression="${hibernate.export.target}" default-value="EXPORT"
*/
private String target;
* <li><strong>DROP</strong> drop database-schema</li>
* <li><strong>BOTH</strong> <strong>(DEFAULT!)</strong></li>
* </ul>
- * @parameter default-value="BOTH"
+ * @parameter expression="${hibernate.export.type}" default-value="BOTH"
*/
private String type;
/**
* Output file.
*
- * @parameter default-value="${project.build.outputDirectory}/schema.sql"
+ * @parameter expression="${hibernate.export.schema.filename}" default-value="${project.build.directory}/schema.sql"
*/
private String outputFile;
/**
* Delimiter in output-file.
*
- * @parameter default-value=";"
+ * @parameter expression="${hibernate.export.schema.delimiter}" default-value=";"
*/
private String delimiter;
/**
* Format output-file.
*
- * @parameter default-value="true"
+ * @parameter expression="${hibernate.export.schema.format}" default-value="true"
*/
private boolean format;
if (skip)
{
getLog().info("Exectuion of hibernate4-maven-plugin:export was skipped!");
+ project.getProperties().setProperty(EXPORT_SKIPPED_PROPERTY, "true");
return;
}
if (!dir.exists())
throw new MojoExecutionException("Cannot scan for annotated classes in " + outputDirectory + ": directory does not exist!");
- Map<String,Long> timestamps;
+ Map<String,String> md5s;
boolean modified = false;
- File saved = new File(outputDirectory + File.separator + TIMESTAMPS);
+ File saved = new File(buildDirectory + File.separator + MD5S);
if (saved.exists())
{
{
FileInputStream fis = new FileInputStream(saved);
ObjectInputStream ois = new ObjectInputStream(fis);
- timestamps = (HashMap<String,Long>)ois.readObject();
+ md5s = (HashMap<String,String>)ois.readObject();
ois.close();
}
catch (Exception e)
{
- timestamps = new HashMap<String,Long>();
+ md5s = new HashMap<String,String>();
getLog().warn("Cannot read timestamps from saved: " + e);
}
}
else
{
- timestamps = new HashMap<String,Long>();
+ md5s = new HashMap<String,String>();
try
{
saved.createNewFile();
if (db.getAnnotationIndex().containsKey(Embeddable.class.getName()))
classNames.addAll(db.getAnnotationIndex().get(Embeddable.class.getName()));
+ MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
for (String name : classNames)
{
Class<?> annotatedClass = classLoader.loadClass(name);
classes.add(annotatedClass);
- URL classUrl = annotatedClass.getResource(annotatedClass.getSimpleName() + ".class");
- File classFile = new File(classUrl.toURI());
- long lastModified = classFile.lastModified();
- long timestamp = !timestamps.containsKey(name) ? 0 : timestamps.get(name);
- if (lastModified > timestamp)
+ InputStream is =
+ annotatedClass
+ .getResourceAsStream(annotatedClass.getSimpleName() + ".class");
+ byte[] buffer = new byte[1024*4]; // copy data in 4MB-chunks
+ int i;
+ while((i = is.read(buffer)) > -1)
+ digest.update(buffer, 0, i);
+ is.close();
+ byte[] bytes = digest.digest();
+ BigInteger bi = new BigInteger(1, bytes);
+ String newMd5 = String.format("%0" + (bytes.length << 1) + "x", bi);
+ String oldMd5 = !md5s.containsKey(name) ? "" : md5s.get(name);
+ if (!newMd5.equals(oldMd5))
{
getLog().debug("Found new or modified annotated class: " + name);
modified = true;
- timestamps.put(name, lastModified);
+ md5s.put(name, newMd5);
+ }
+ else
+ {
+ getLog().debug(oldMd5 + " -> class unchanged: " + name);
}
}
}
if (classes.isEmpty())
throw new MojoFailureException("No annotated classes found in directory " + outputDirectory);
- if (!modified)
- {
- getLog().info("No modified annotated classes found.");
- getLog().info("Skipping schema generation!");
- project.getProperties().setProperty("hibernate4.skipped", "true");
- return;
- }
-
getLog().debug("Detected classes with mapping-annotations:");
for (Class<?> annotatedClass : classes)
getLog().debug(" " + annotatedClass.getName());
properties.setProperty(DIALECT, hibernateDialect);
}
- getLog().info("Gathered hibernate-configuration (turn on debugging for details):");
+ /** The generated SQL varies with the dialect! */
+ if (md5s.containsKey(DIALECT))
+ {
+ String dialect = properties.getProperty(DIALECT);
+ if (md5s.get(DIALECT).equals(dialect))
+ getLog().debug("SQL-dialect unchanged.");
+ else
+ {
+ getLog().debug("SQL-dialect changed: " + dialect);
+ modified = true;
+ md5s.put(DIALECT, dialect);
+ }
+ }
+ else
+ {
+ modified = true;
+ md5s.put(DIALECT, properties.getProperty(DIALECT));
+ }
+
if (properties.isEmpty())
{
getLog().error("No properties set!");
throw new MojoFailureException("Hibernate-Configuration is missing!");
}
- for (Entry<Object,Object> entry : properties.entrySet())
- getLog().info(" " + entry.getKey() + " = " + entry.getValue());
Configuration config = new Configuration();
config.setProperties(properties);
Target target = null;
try
{
- target = Target.valueOf(this.target);
+ target = Target.valueOf(this.target.toUpperCase());
}
catch (IllegalArgumentException e)
{
Type type = null;
try
{
- type = Type.valueOf(this.type);
+ type = Type.valueOf(this.type.toUpperCase());
}
catch (IllegalArgumentException e)
{
throw new MojoExecutionException("Invalid value for configuration-option \"type\"");
}
+ if (target.equals(Target.SCRIPT) || target.equals(Target.NONE))
+ {
+ project.getProperties().setProperty(EXPORT_SKIPPED_PROPERTY, "true");
+ }
+ if (
+ !modified
+ && !target.equals(Target.SCRIPT)
+ && !target.equals(Target.NONE)
+ )
+ {
+ getLog().info("No modified annotated classes found and dialect unchanged.");
+ getLog().info("Skipping schema generation!");
+ project.getProperties().setProperty(EXPORT_SKIPPED_PROPERTY, "true");
+ return;
+ }
+
+ getLog().info("Gathered hibernate-configuration (turn on debugging for details):");
+ for (Entry<Object,Object> entry : properties.entrySet())
+ getLog().info(" " + entry.getKey() + " = " + entry.getValue());
+
Connection connection = null;
try
{
}
}
- /** Write timestamps for annotated classes to file */
+ /** Write md5-sums for annotated classes to file */
try
{
FileOutputStream fos = new FileOutputStream(saved);
ObjectOutputStream oos = new ObjectOutputStream(fos);
- oos.writeObject(timestamps);
+ oos.writeObject(md5s);
oos.close();
fos.close();
}
catch (Exception e)
{
- getLog().error("Cannot write timestamps to file: " + e);
+ getLog().error("Cannot write md5-sums to file: " + e);
}
}
* Needed, because DriverManager won't pick up drivers, that were not
* loaded by the system-classloader!
* See:
- * http://stackoverflow.com/questions/288828/how-to-use-a-jdbc-driver-from-an-arbitrary-location
+ * http://stackoverflow.com/questions/288828/how-to-use-a-jdbc-driver-fromodifiedm-an-arbitrary-location
*/
static final class DriverProxy implements Driver
{
projects / hibernate4-maven-plugin / blobdiff