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Liquibase extension for hibernate integration including generating changesets based on changed
hibernate mapping files
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package liquibase.ext.hibernate.database.connection;
import java.io.IOException;
import java.io.StringReader;
import java.net.URLDecoder;
import java.sql.*;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
/**
* Implements java.sql.Connection in order to pretend a hibernate configuration is a database in order to fit into the Liquibase framework.
* Beyond standard Connection methods, this class exposes {@link #getPrefix()}, {@link #getPath()} and {@link #getProperties()} to access the setting passed in the JDBC URL.
*/
public class HibernateConnection implements Connection {
private String prefix;
private String url;
private String path;
private Properties properties;
public HibernateConnection(String url) {
this.url = url;
this.prefix = url.replaceFirst(":[^:]+$", "");
// Trim the prefix off the URL for the path
path = url.substring(prefix.length() + 1);
// Check if there is a parameter/query string value.
properties = new Properties();
int queryIndex = path.indexOf('?');
if (queryIndex >= 0) {
// Convert the query string into properties
properties.putAll(readProperties(path.substring(queryIndex + 1)));
if (properties.containsKey("dialect") && !properties.containsKey("hibernate.dialect")) {
properties.put("hibernate.dialect", properties.getProperty("dialect"));
}
// Remove the query string
path = path.substring(0, queryIndex);
}
}
/**
* Creates properties to attach to this connection based on the passed query string.
*/
protected Properties readProperties(String queryString) {
Properties properties = new Properties();
queryString = queryString.replaceAll("&", System.getProperty("line.separator"));
try {
queryString = URLDecoder.decode(queryString, "UTF-8");
properties.load(new StringReader(queryString));
} catch (IOException ioe) {
throw new IllegalStateException("Failed to read properties from url", ioe);
}
return properties;
}
/**
* Returns the entire connection URL
*/
public String getUrl() {
return url;
}
/**
* Returns the 'protocol' of the URL. For example, "hibernate:classic" or "hibernate:ejb3"
*/
public String getPrefix() {
return prefix;
}
/**
* The portion of the url between the path and the query string. Normally a filename or a class name.
*/
public String getPath() {
return path;
}
/**
* The set of properties provided by the URL. Eg:
*
* hibernate:classic:/path/to/hibernate.cfg.xml?foo=bar
*
* This will have a property called 'foo' with a value of 'bar'.
*/
public Properties getProperties() {
return properties;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
/// JDBC METHODS
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
public Statement createStatement() throws SQLException {
return null;
}
public PreparedStatement prepareStatement(String sql) throws SQLException {
return null;
}
public CallableStatement prepareCall(String sql) throws SQLException {
return null;
}
public String nativeSQL(String sql) throws SQLException {
return null;
}
public void setAutoCommit(boolean autoCommit) throws SQLException {
}
public boolean getAutoCommit() throws SQLException {
return false;
}
public void commit() throws SQLException {
}
public void rollback() throws SQLException {
}
public void close() throws SQLException {
}
public boolean isClosed() throws SQLException {
return false;
}
public DatabaseMetaData getMetaData() throws SQLException {
return new HibernateConnectionMetadata(url);
}
public void setReadOnly(boolean readOnly) throws SQLException {
}
public boolean isReadOnly() throws SQLException {
return true;
}
public void setCatalog(String catalog) throws SQLException {
}
public String getCatalog() throws SQLException {
return "HIBERNATE";
}
public void setTransactionIsolation(int level) throws SQLException {
}
public int getTransactionIsolation() throws SQLException {
return 0;
}
public SQLWarning getWarnings() throws SQLException {
return null;
}
public void clearWarnings() throws SQLException {
}
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
return null;
}
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
return null;
}
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
return null;
}
public Map> getTypeMap() throws SQLException {
return null;
}
public void setTypeMap(Map> map) throws SQLException {
}
public void setHoldability(int holdability) throws SQLException {
}
public int getHoldability() throws SQLException {
return 0;
}
public Savepoint setSavepoint() throws SQLException {
return null;
}
public Savepoint setSavepoint(String name) throws SQLException {
return null;
}
public void rollback(Savepoint savepoint) throws SQLException {
}
public void releaseSavepoint(Savepoint savepoint) throws SQLException {
}
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
return null;
}
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
return null;
}
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
return null;
}
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
return null;
}
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
return null;
}
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
return null;
}
public Clob createClob() throws SQLException {
return null;
}
public Blob createBlob() throws SQLException {
return null;
}
public NClob createNClob() throws SQLException {
return null;
}
public SQLXML createSQLXML() throws SQLException {
return null;
}
public boolean isValid(int timeout) throws SQLException {
return false;
}
public void setClientInfo(String name, String value) throws SQLClientInfoException {
}
public void setClientInfo(Properties properties) throws SQLClientInfoException {
}
public String getClientInfo(String name) throws SQLException {
return null;
}
public Properties getClientInfo() throws SQLException {
return null;
}
public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
return null;
}
public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
return null;
}
public T unwrap(Class iface) throws SQLException {
return null;
}
public boolean isWrapperFor(Class iface) throws SQLException {
return false;
}
//@Override only in java 1.7
public void abort(Executor arg0) throws SQLException {
}
//@Override only in java 1.7
public int getNetworkTimeout() throws SQLException {
return 0;
}
//@Override only in java 1.7
public String getSchema() throws SQLException {
return "HIBERNATE";
}
//@Override only in java 1.7
public void setNetworkTimeout(Executor arg0, int arg1) throws SQLException {
}
//@Override only in java 1.7
public void setSchema(String arg0) throws SQLException {
}
}