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org.sqlite.jdbc3.JDBC3PreparedStatement Maven / Gradle / Ivy
package org.sqlite.jdbc3;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Date;
import java.sql.ParameterMetaData;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Time;
import java.sql.Timestamp;
import java.sql.Types;
import java.util.Calendar;
import org.sqlite.SQLiteConnection;
import org.sqlite.core.CorePreparedStatement;
public abstract class JDBC3PreparedStatement extends CorePreparedStatement {
protected JDBC3PreparedStatement(SQLiteConnection conn, String sql) throws SQLException {
super(conn, sql);
}
/**
* @see java.sql.PreparedStatement#clearParameters()
*/
public void clearParameters() throws SQLException {
checkOpen();
conn.getDatabase().clear_bindings(pointer);
if (batch != null)
for (int i = batchPos; i < batchPos + paramCount; i++)
batch[i] = null;
}
/**
* @see java.sql.PreparedStatement#execute()
*/
public boolean execute() throws SQLException {
checkOpen();
rs.close();
conn.getDatabase().reset(pointer);
boolean success = false;
try {
resultsWaiting = conn.getDatabase().execute(this, batch);
success = true;
return columnCount != 0;
} finally {
if (!success && pointer != 0) conn.getDatabase().reset(pointer);
}
}
/**
* @see java.sql.PreparedStatement#executeQuery()
*/
public ResultSet executeQuery() throws SQLException {
checkOpen();
if (columnCount == 0) {
throw new SQLException("Query does not return results");
}
rs.close();
conn.getDatabase().reset(pointer);
boolean success = false;
try {
resultsWaiting = conn.getDatabase().execute(this, batch);
success = true;
} finally {
if (!success && pointer != 0) conn.getDatabase().reset(pointer);
}
return getResultSet();
}
/**
* @see java.sql.PreparedStatement#executeUpdate()
*/
public int executeUpdate() throws SQLException {
checkOpen();
if (columnCount != 0) {
throw new SQLException("Query returns results");
}
rs.close();
conn.getDatabase().reset(pointer);
return conn.getDatabase().executeUpdate(this, batch);
}
/**
* @see java.sql.PreparedStatement#addBatch()
*/
public void addBatch() throws SQLException {
checkOpen();
batchPos += paramCount;
batchQueryCount++;
if (batch == null) {
batch = new Object[paramCount];
}
if (batchPos + paramCount > batch.length) {
Object[] nb = new Object[batch.length * 2];
System.arraycopy(batch, 0, nb, 0, batch.length);
batch = nb;
}
System.arraycopy(batch, batchPos - paramCount, batch, batchPos, paramCount);
}
// ParameterMetaData FUNCTIONS //////////////////////////////////
/**
* @see java.sql.PreparedStatement#getParameterMetaData()
*/
public ParameterMetaData getParameterMetaData() {
return (ParameterMetaData) this;
}
/**
* @see java.sql.ParameterMetaData#getParameterCount()
*/
public int getParameterCount() throws SQLException {
checkOpen();
return paramCount;
}
/**
* @see java.sql.ParameterMetaData#getParameterClassName(int)
*/
public String getParameterClassName(int param) throws SQLException {
checkOpen();
return "java.lang.String";
}
/**
* @see java.sql.ParameterMetaData#getParameterTypeName(int)
*/
public String getParameterTypeName(int pos) {
return "VARCHAR";
}
/**
* @see java.sql.ParameterMetaData#getParameterType(int)
*/
public int getParameterType(int pos) {
return Types.VARCHAR;
}
/**
* @see java.sql.ParameterMetaData#getParameterMode(int)
*/
public int getParameterMode(int pos) {
return ParameterMetaData.parameterModeIn;
}
/**
* @see java.sql.ParameterMetaData#getPrecision(int)
*/
public int getPrecision(int pos) {
return 0;
}
/**
* @see java.sql.ParameterMetaData#getScale(int)
*/
public int getScale(int pos) {
return 0;
}
/**
* @see java.sql.ParameterMetaData#isNullable(int)
*/
public int isNullable(int pos) {
return ParameterMetaData.parameterNullable;
}
/**
* @see java.sql.ParameterMetaData#isSigned(int)
*/
public boolean isSigned(int pos) {
return true;
}
/**
* @return
*/
public Statement getStatement() {
return this;
}
/**
* @see java.sql.PreparedStatement#setBigDecimal(int, java.math.BigDecimal)
*/
public void setBigDecimal(int pos, BigDecimal value) throws SQLException {
batch(pos, value == null ? null : value.toString());
}
/**
* Reads given number of bytes from an input stream.
* @param istream The input stream.
* @param length The number of bytes to read.
* @return byte array.
* @throws SQLException
*/
private byte[] readBytes(InputStream istream, int length) throws SQLException {
if (length < 0) {
SQLException exception =
new SQLException("Error reading stream. Length should be non-negative");
throw exception;
}
byte[] bytes = new byte[length];
try
{
int bytesRead;
int totalBytesRead = 0;
while (totalBytesRead < length) {
bytesRead = istream.read(bytes, totalBytesRead, length - totalBytesRead);
if (bytesRead == -1) {
throw new IOException("End of stream has been reached");
}
totalBytesRead += bytesRead;
}
return bytes;
}
catch (IOException cause)
{
SQLException exception = new SQLException("Error reading stream");
exception.initCause(cause);
throw exception;
}
}
/**
* @see java.sql.PreparedStatement#setBinaryStream(int, java.io.InputStream, int)
*/
public void setBinaryStream(int pos, InputStream istream, int length) throws SQLException {
if (istream == null && length == 0) {
setBytes(pos, null);
}
setBytes(pos, readBytes(istream, length));
}
/**
* @see java.sql.PreparedStatement#setAsciiStream(int, java.io.InputStream, int)
*/
public void setAsciiStream(int pos, InputStream istream, int length) throws SQLException {
setUnicodeStream(pos, istream, length);
}
/**
* @see java.sql.PreparedStatement#setUnicodeStream(int, java.io.InputStream, int)
*/
public void setUnicodeStream(int pos, InputStream istream, int length) throws SQLException {
if (istream == null && length == 0) {
setString(pos, null);
}
try {
setString(pos, new String(readBytes(istream, length), "UTF-8"));
} catch (UnsupportedEncodingException e) {
SQLException exception = new SQLException("UTF-8 is not supported");
exception.initCause(e);
throw exception;
}
}
/**
* @see java.sql.PreparedStatement#setBoolean(int, boolean)
*/
public void setBoolean(int pos, boolean value) throws SQLException {
setInt(pos, value ? 1 : 0);
}
/**
* @see java.sql.PreparedStatement#setByte(int, byte)
*/
public void setByte(int pos, byte value) throws SQLException {
setInt(pos, value);
}
/**
* @see java.sql.PreparedStatement#setBytes(int, byte[])
*/
public void setBytes(int pos, byte[] value) throws SQLException {
batch(pos, value);
}
/**
* @see java.sql.PreparedStatement#setDouble(int, double)
*/
public void setDouble(int pos, double value) throws SQLException {
batch(pos, new Double(value));
}
/**
* @see java.sql.PreparedStatement#setFloat(int, float)
*/
public void setFloat(int pos, float value) throws SQLException {
batch(pos, new Float(value));
}
/**
* @see java.sql.PreparedStatement#setInt(int, int)
*/
public void setInt(int pos, int value) throws SQLException {
batch(pos, new Integer(value));
}
/**
* @see java.sql.PreparedStatement#setLong(int, long)
*/
public void setLong(int pos, long value) throws SQLException {
batch(pos, new Long(value));
}
/**
* @see java.sql.PreparedStatement#setNull(int, int)
*/
public void setNull(int pos, int u1) throws SQLException {
setNull(pos, u1, null);
}
/**
* @see java.sql.PreparedStatement#setNull(int, int, java.lang.String)
*/
public void setNull(int pos, int u1, String u2) throws SQLException {
batch(pos, null);
}
/**
* @see java.sql.PreparedStatement#setObject(int, java.lang.Object)
*/
public void setObject(int pos, Object value) throws SQLException {
if (value == null) {
batch(pos, null);
}
else if (value instanceof java.util.Date) {
setDateByMilliseconds(pos, ((java.util.Date)value).getTime(), Calendar.getInstance());
}
else if (value instanceof Long) {
batch(pos, value);
}
else if (value instanceof Integer) {
batch(pos, value);
}
else if (value instanceof Short) {
batch(pos, new Integer(((Short) value).intValue()));
}
else if (value instanceof Float) {
batch(pos, value);
}
else if (value instanceof Double) {
batch(pos, value);
}
else if (value instanceof Boolean) {
setBoolean(pos, ((Boolean) value).booleanValue());
}
else if (value instanceof byte[]) {
batch(pos, value);
}
else if (value instanceof BigDecimal) {
setBigDecimal(pos, (BigDecimal)value);
}
else {
batch(pos, value.toString());
}
}
/**
* @see java.sql.PreparedStatement#setObject(int, java.lang.Object, int)
*/
public void setObject(int p, Object v, int t) throws SQLException {
setObject(p, v);
}
/**
* @see java.sql.PreparedStatement#setObject(int, java.lang.Object, int, int)
*/
public void setObject(int p, Object v, int t, int s) throws SQLException {
setObject(p, v);
}
/**
* @see java.sql.PreparedStatement#setShort(int, short)
*/
public void setShort(int pos, short value) throws SQLException {
setInt(pos, value);
}
/**
* @see java.sql.PreparedStatement#setString(int, java.lang.String)
*/
public void setString(int pos, String value) throws SQLException {
batch(pos, value);
}
/**
* @see java.sql.PreparedStatement#setCharacterStream(int, java.io.Reader, int)
*/
public void setCharacterStream(int pos, Reader reader, int length) throws SQLException {
try {
// copy chars from reader to StringBuffer
StringBuffer sb = new StringBuffer();
char[] cbuf = new char[8192];
int cnt;
while ((cnt = reader.read(cbuf)) > 0) {
sb.append(cbuf, 0, cnt);
}
// set as string
setString(pos, sb.toString());
}
catch (IOException e) {
throw new SQLException("Cannot read from character stream, exception message: " + e.getMessage());
}
}
/**
* @see java.sql.PreparedStatement#setDate(int, java.sql.Date)
*/
public void setDate(int pos, Date x) throws SQLException {
setDate(pos, x, Calendar.getInstance());
}
/**
* @see java.sql.PreparedStatement#setDate(int, java.sql.Date, java.util.Calendar)
*/
public void setDate(int pos, Date x, Calendar cal) throws SQLException {
if (x == null) {
setObject(pos, null);
} else {
setDateByMilliseconds(pos, x.getTime(), cal);
}
}
/**
* @see java.sql.PreparedStatement#setTime(int, java.sql.Time)
*/
public void setTime(int pos, Time x) throws SQLException {
setTime(pos, x, Calendar.getInstance());
}
/**
* @see java.sql.PreparedStatement#setTime(int, java.sql.Time, java.util.Calendar)
*/
public void setTime(int pos, Time x, Calendar cal) throws SQLException {
if (x == null) {
setObject(pos, null);
} else {
setDateByMilliseconds(pos, x.getTime(), cal);
}
}
/**
* @see java.sql.PreparedStatement#setTimestamp(int, java.sql.Timestamp)
*/
public void setTimestamp(int pos, Timestamp x) throws SQLException {
setTimestamp(pos, x, Calendar.getInstance());
}
/**
* @see java.sql.PreparedStatement#setTimestamp(int, java.sql.Timestamp, java.util.Calendar)
*/
public void setTimestamp(int pos, Timestamp x, Calendar cal) throws SQLException {
if (x == null) {
setObject(pos, null);
} else {
setDateByMilliseconds(pos, x.getTime(), cal);
}
}
/**
* @see java.sql.PreparedStatement#getMetaData()
*/
public ResultSetMetaData getMetaData() throws SQLException {
checkOpen();
return (ResultSetMetaData)rs;
}
// UNUSED ///////////////////////////////////////////////////////
protected SQLException unused() {
return new SQLException("not implemented by SQLite JDBC driver");
}
// PreparedStatement ////////////////////////////////////////////
public void setArray(int i, Array x)
throws SQLException { throw unused(); }
// public void setBigDecimal(int parameterIndex, BigDecimal x)
// throws SQLException { throw unused(); }
public void setBlob(int i, Blob x)
throws SQLException { throw unused(); }
public void setClob(int i, Clob x)
throws SQLException { throw unused(); }
public void setRef(int i, Ref x)
throws SQLException { throw unused(); }
public void setURL(int pos, URL x)
throws SQLException { throw unused(); }
/**
* @see org.sqlite.core.CoreStatement#exec(java.lang.String)
*/
@Override
public boolean execute(String sql) throws SQLException {
throw unused();
}
/**
* @see org.sqlite.core.CoreStatement#exec(java.lang.String)
*/
@Override
public int executeUpdate(String sql) throws SQLException {
throw unused();
}
/**
* @see org.sqlite.core.CoreStatement#exec(String)
*/
@Override
public ResultSet executeQuery(String sql) throws SQLException {
throw unused();
}
/**
*/
@Override
public void addBatch(String sql) throws SQLException {
throw unused();
}
}
