/
SQLDroidConnection.java
535 lines (459 loc) · 21.3 KB
/
SQLDroidConnection.java
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package org.sqldroid;
import java.lang.reflect.Constructor;
import java.sql.Array;
import java.sql.Blob;
import java.sql.CallableStatement;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.NClob;
import java.sql.PreparedStatement;
import java.sql.SQLClientInfoException;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Savepoint;
import java.sql.Statement;
import java.sql.Struct;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.Executor;
public class SQLDroidConnection implements Connection {
/**
* A map to a single instance of a SQLiteDatabase per DB.
*/
private static final Map<String, SQLiteDatabase> dbMap =
new HashMap<String, SQLiteDatabase>();
/**
* A map from a connection to a SQLiteDatabase instance.
* Used to track the use of each instance, and close the database when last conneciton is closed.
*/
private static final Map<SQLDroidConnection, SQLiteDatabase> clientMap =
new HashMap<SQLDroidConnection, SQLiteDatabase>();
/** The Android sqlitedb. */
private SQLiteDatabase sqlitedb;
private boolean autoCommit = true;
/** Will have the value 9 or greater the version of SQLException has the constructor:
* SQLException(Throwable theCause) otherwise false.
* API levels 9 or greater have this constructor.
* If the value is positive and less than 9 then the SQLException does not have the constructor.
* If the value is < 0 then the capabilities of SQLException have not been determined.
*/
protected static int sqlThrowable = -1;
/** Connect to the database with the given url and properties.
*
* @param url the URL string, typically something like
* "jdbc:sqlite:/data/data/your-package/databasefilename" so for example:
* "jdbc:sqlite:/data/data/org.sqldroid.examples/databases/sqlite.db"
* @param info Properties object with options. Supported options are "timeout", "retry", and "shared".
*/
public SQLDroidConnection(String url, Properties info) throws SQLException {
Log.v("SQLDroidConnection: " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
Log.v("New sqlite jdbc from url '" + url + "', " + "'" + info + "'");
// Make a filename from url
String dbQname;
if(url.startsWith(SQLDroidDriver.xerialPrefix)) {
dbQname = url.substring(SQLDroidDriver.xerialPrefix.length());
} else {
// there does not seem to be any possibility of error handling.
// So we could check that the url starts with SQLDroidDriver.sqldroidPrefix
// but if it doesn't there's nothing we can do (no Exception is specified)
// so it has to be assumed that the URL is valid when passed to this method.
dbQname = url.substring(SQLDroidDriver.sqldroidPrefix.length());
}
long timeout = 0; // default to no retries to be consistent with other JDBC implemenations.
long retryInterval = 50; // this was 1000 in the original code. 1 second is too long for each loop.
int queryPart = dbQname.indexOf('?');
// if there's a query part, we accept "timeout=xxx" and "retry=yyy"
if ( queryPart > 0 ) {
dbQname = dbQname.substring(0, queryPart);
String options = dbQname.substring(queryPart);
while (options.length() > 0) {
int optionEnd = options.indexOf('&');
if (optionEnd == -1) {
optionEnd = options.length();
}
int equals = options.lastIndexOf('=', optionEnd);
String optionName = options.substring(0, equals).trim();
String optionValueString = options.substring(equals+1, optionEnd).trim();
long optionValue;
try {
optionValue = Long.parseLong(optionValueString);
if (optionName.equals("timeout")) {
timeout = optionValue;
} else if (optionName.equals("retry")) {
timeout = optionValue;
retryInterval = optionValue;
}
Log.v("Timeout: " + timeout);
} catch ( NumberFormatException nfe ) {
// print and ignore
Log.e("Error Parsing URL \"" + url + "\" Timeout String \"" + optionValueString + "\" is not a valid long", nfe);
}
options = options.substring(optionEnd + 1);
}
}
Log.v("opening database " + dbQname);
int flags = android.database.sqlite.SQLiteDatabase.CREATE_IF_NECESSARY
| android.database.sqlite.SQLiteDatabase.OPEN_READWRITE
| android.database.sqlite.SQLiteDatabase.NO_LOCALIZED_COLLATORS;
if ( info != null ) {
if ( info.getProperty(SQLDroidDriver.DATABASE_FLAGS) != null ) {
try {
flags = Integer.parseInt(info.getProperty(SQLDroidDriver.DATABASE_FLAGS));
} catch ( NumberFormatException nfe ) {
Log.e("Error Parsing DatabaseFlags \"" + info.getProperty(SQLDroidDriver.DATABASE_FLAGS) + " not a number ", nfe);
}
} else if ( info != null && info.getProperty(SQLDroidDriver.ADDITONAL_DATABASE_FLAGS) != null ) {
try {
int extraFlags = Integer.parseInt(info.getProperty(SQLDroidDriver.ADDITONAL_DATABASE_FLAGS));
flags |= extraFlags;
} catch ( NumberFormatException nfe ) {
Log.e("Error Parsing DatabaseFlags \"" + info.getProperty(SQLDroidDriver.ADDITONAL_DATABASE_FLAGS) + " not a number ", nfe);
}
}
}
synchronized(dbMap) {
sqlitedb = dbMap.get(dbQname);
if (sqlitedb == null) {
Log.i("SQLDroidConnection: " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this + " Opening new database: " + dbQname);
sqlitedb = new SQLiteDatabase(dbQname, timeout, retryInterval, flags);
dbMap.put(dbQname, sqlitedb);
clientMap.put(this, sqlitedb);
}
}
}
/** Returns the delegate SQLiteDatabase. */
public SQLiteDatabase getDb() {
return sqlitedb;
}
@Override
public void clearWarnings() throws SQLException {
}
/** This will create and return an exception. For API levels less than 9 this will return
* a SQLDroidSQLException, for later APIs it will return a SQLException.
*/
public static SQLException chainException(android.database.SQLException sqlException) {
if ( sqlThrowable < 0 || sqlThrowable >= 9 ) {
try {
sqlThrowable = 9;
//return new SQLException (sqlException);
// creating by reflection is significantly slower, but since Exceptions should be unusual
// this should not be a performance issue.
final Constructor<?> c = SQLException.class.getDeclaredConstructor(new Class[] {Throwable.class});
return (SQLException)c.newInstance(new Object[]{sqlException});
} catch ( Exception e) {
sqlThrowable = 1;
}
}
// if the code above worked correctly, then the exception will have been returned. Otherwise, we need
// to go through this clause and create a SQLDroidSQLException
try {
// avoid a direct reference to the sqldroidSQLException so that app > API level 9 do not need that class.
final Constructor<?> c = SQLDroidConnection.class.getClassLoader().loadClass("org.sqldroid.SQLDroidSQLException").getDeclaredConstructor(new Class[] {android.database.SQLException.class});
// SQLDroidSQLException is an instance of (direct subclass of) SQLException, so the cast below is correct although
// the instance created will always be a SQLDroidSQLException
return (SQLException)c.newInstance(new Object[]{sqlException});
} catch (Exception e) {
return new SQLException ("Unable to Chain SQLException " + sqlException.getMessage());
}
}
@Override
public void close() throws SQLException {
Log.v("SQLDroidConnection.close(): " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
if (sqlitedb != null) {
synchronized(dbMap) {
clientMap.remove(this);
if (!clientMap.containsValue(sqlitedb)) {
Log.i("SQLDroidConnection.close(): " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this + " Closing the database since since last connection was closed.");
sqlitedb.close();
dbMap.remove(sqlitedb.dbQname);
}
}
sqlitedb = null;
} else {
Log.e("SQLDroidConnection.close(): " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this + " Duplicate close!");
}
}
@Override
public void commit() throws SQLException {
if (autoCommit) {
throw new SQLException("database in auto-commit mode");
}
sqlitedb.setTransactionSuccessful();
Log.d("END TRANSACTION (commit) " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
sqlitedb.endTransaction();
Log.d("BEGIN TRANSACTION (after commit) " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
sqlitedb.beginTransaction();
}
@Override
public Statement createStatement() throws SQLException {
return new SQLDroidStatement(this);
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return null;
}
@Override
public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability)
throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return null;
}
@Override
public boolean getAutoCommit() throws SQLException {
return autoCommit;
}
@Override
public String getCatalog() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return null;
}
@Override
public int getHoldability() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return 0;
}
@Override
public DatabaseMetaData getMetaData() throws SQLException {
return new SQLDroidDatabaseMetaData(this);
}
@Override
public int getTransactionIsolation() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return 0;
}
@Override
public Map<String, Class<?>> getTypeMap() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return null;
}
@Override
public SQLWarning getWarnings() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
return null;
}
@Override
public boolean isClosed() throws SQLException {
// assuming that "isOpen" doesn't throw a locked exception..
return sqlitedb == null || sqlitedb.getSqliteDatabase() == null ||
!sqlitedb.getSqliteDatabase().isOpen();
}
@Override
public boolean isReadOnly() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return false;
}
@Override
public String nativeSQL(String sql) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
sqlitedb.execSQL(sql);
return "SQLDroid: no return info available from sqlite";
}
@Override
public CallableStatement prepareCall(String sql) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency,
int resultSetHoldability) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public PreparedStatement prepareStatement(String sql) throws SQLException {
return new SQLDroidPreparedStatement(sql, this);
}
@Override
public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
return prepareStatement (sql );
}
@Override
public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public void releaseSavepoint(Savepoint savepoint) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
}
@Override
public void rollback() throws SQLException {
if (autoCommit) {
throw new SQLException("database in auto-commit mode");
}
Log.d("END TRANSACTION (rollback) " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
sqlitedb.endTransaction();
Log.d("BEGIN TRANSACTION (after rollback) " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
sqlitedb.beginTransaction();
}
@Override
public void rollback(Savepoint savepoint) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "
+ DebugPrinter.getLineNumber());
}
@Override
public void setAutoCommit(boolean autoCommit) throws SQLException {
if (this.autoCommit == autoCommit) {
return;
}
this.autoCommit = autoCommit;
if (autoCommit) {
sqlitedb.setTransactionSuccessful();
Log.d("END TRANSACTION (autocommit on) " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
sqlitedb.endTransaction();
} else {
Log.d("BEGIN TRANSACTION (autocommit off) " + Thread.currentThread().getId() + " \"" + Thread.currentThread().getName() + "\" " + this);
sqlitedb.beginTransaction();
}
}
@Override
public void setCatalog(String catalog) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
}
@Override
public void setHoldability(int holdability) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
}
@Override
public void setReadOnly(boolean readOnly) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
}
@Override
public Savepoint setSavepoint() throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public Savepoint setSavepoint(String name) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line " + DebugPrinter.getLineNumber());
return null;
}
@Override
public void setTransactionIsolation(int level) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "+ DebugPrinter.getLineNumber());
}
@Override
public void setTypeMap(Map<String, Class<?>> arg0) throws SQLException {
System.err.println(" ********************* not implemented @ " + DebugPrinter.getFileName() + " line "+ DebugPrinter.getLineNumber());
}
@Override
protected void finalize() throws Throwable {
Log.v(" --- Finalize SQLDroid.");
if (!isClosed()) {
close();
}
super.finalize();
}
@Override
public boolean isWrapperFor(Class<?> arg0) throws SQLException {
// TODO Auto-generated method stub
return false;
}
@Override
public <T> T unwrap(Class<T> arg0) throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public Blob createBlob() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public Clob createClob() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public NClob createNClob() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public SQLXML createSQLXML() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public Properties getClientInfo() throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public String getClientInfo(String name) throws SQLException {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean isValid(int timeout) throws SQLException {
// TODO Auto-generated method stub
return false;
}
@Override
public void setClientInfo(Properties properties) throws SQLClientInfoException {
// TODO Auto-generated method stub
}
@Override
public void setClientInfo(String name, String value) throws SQLClientInfoException {
// TODO Auto-generated method stub
}
// methods added for JDK7 compilation
public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
// TODO Auto-generated method stub
}
public int getNetworkTimeout() throws SQLException {
// TODO Auto-generated method stub
return 0;
}
public void abort(Executor executor) throws SQLException {
// TODO Auto-generated method stub
}
public String getSchema() throws SQLException {
// TODO Auto-generated method stub
return null;
}
public void setSchema(String schema) throws SQLException {
// TODO Auto-generated method stub
}
}