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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.JDBCType;
import java.sql.ParameterMetaData;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import java.sql.SQLFeatureNotSupportedException;
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;
import org.sqlite.core.DB;
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();
pointer.safeRunConsume(DB::clear_bindings);
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();
pointer.safeRunConsume(DB::reset);
exhaustedResults = false;
if (this.conn instanceof JDBC3Connection) {
((JDBC3Connection) this.conn).tryEnforceTransactionMode();
}
return this.withConnectionTimeout(
() -> {
boolean success = false;
try {
resultsWaiting =
conn.getDatabase().execute(JDBC3PreparedStatement.this, batch);
success = true;
updateCount = getDatabase().changes();
return 0 != columnCount;
} finally {
if (!success && !pointer.isClosed()) pointer.safeRunConsume(DB::reset);
}
});
}
/** @see java.sql.PreparedStatement#executeQuery() */
public ResultSet executeQuery() throws SQLException {
checkOpen();
if (columnCount == 0) {
throw new SQLException("Query does not return results");
}
rs.close();
pointer.safeRunConsume(DB::reset);
exhaustedResults = false;
if (this.conn instanceof JDBC3Connection) {
((JDBC3Connection) this.conn).tryEnforceTransactionMode();
}
return this.withConnectionTimeout(
() -> {
boolean success = false;
try {
resultsWaiting =
conn.getDatabase().execute(JDBC3PreparedStatement.this, batch);
success = true;
} finally {
if (!success && !pointer.isClosed()) {
pointer.safeRunInt(DB::reset);
}
}
return getResultSet();
});
}
/** @see java.sql.PreparedStatement#executeUpdate() */
public int executeUpdate() throws SQLException {
return (int) executeLargeUpdate();
}
/** @see java.sql.PreparedStatement#executeLargeUpdate() */
public long executeLargeUpdate() throws SQLException {
checkOpen();
if (columnCount != 0) {
throw new SQLException("Query returns results");
}
rs.close();
pointer.safeRunConsume(DB::reset);
exhaustedResults = false;
if (this.conn instanceof JDBC3Connection) {
((JDBC3Connection) this.conn).tryEnforceTransactionMode();
}
return this.withConnectionTimeout(
() -> conn.getDatabase().executeUpdate(JDBC3PreparedStatement.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) throws SQLException {
checkIndex(pos);
return JDBCType.valueOf(getParameterType(pos)).getName();
}
/** @see java.sql.ParameterMetaData#getParameterType(int) */
public int getParameterType(int pos) throws SQLException {
checkIndex(pos);
Object paramValue = batch[pos - 1];
if (paramValue == null) {
return Types.NULL;
} else if (paramValue instanceof Integer
|| paramValue instanceof Short
|| paramValue instanceof Boolean) {
return Types.INTEGER;
} else if (paramValue instanceof Long) {
return Types.BIGINT;
} else if (paramValue instanceof Double || paramValue instanceof Float) {
return Types.REAL;
} else {
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) {
throw new SQLException("Error reading stream. Length should be non-negative");
}
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;
}
protected SQLException unsupported() {
return new SQLFeatureNotSupportedException("not implemented by SQLite JDBC driver");
}
protected SQLException invalid() {
return new SQLException("method cannot be called on a PreparedStatement");
}
// PreparedStatement ////////////////////////////////////////////
public void setArray(int i, Array x) throws SQLException {
throw unsupported();
}
public void setBlob(int i, Blob x) throws SQLException {
throw unsupported();
}
public void setClob(int i, Clob x) throws SQLException {
throw unsupported();
}
public void setRef(int i, Ref x) throws SQLException {
throw unsupported();
}
public void setURL(int pos, URL x) throws SQLException {
throw unsupported();
}
/** @see org.sqlite.core.CoreStatement#exec(java.lang.String) */
@Override
public boolean execute(String sql) throws SQLException {
throw invalid();
}
public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
throw invalid();
}
public boolean execute(String sql, int[] colinds) throws SQLException {
throw invalid();
}
public boolean execute(String sql, String[] colnames) throws SQLException {
throw invalid();
}
/** @see org.sqlite.core.CoreStatement#exec(java.lang.String) */
@Override
public int executeUpdate(String sql) throws SQLException {
throw invalid();
}
public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
throw invalid();
}
public int executeUpdate(String sql, int[] colinds) throws SQLException {
throw invalid();
}
public int executeUpdate(String sql, String[] cols) throws SQLException {
throw invalid();
}
public long executeLargeUpdate(String sql) throws SQLException {
throw invalid();
}
public long executeLargeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
throw invalid();
}
public long executeLargeUpdate(String sql, int[] colinds) throws SQLException {
throw invalid();
}
public long executeLargeUpdate(String sql, String[] cols) throws SQLException {
throw invalid();
}
/** @see org.sqlite.core.CoreStatement#exec(String) */
@Override
public ResultSet executeQuery(String sql) throws SQLException {
throw invalid();
}
/** */
@Override
public void addBatch(String sql) throws SQLException {
throw invalid();
}
}
