/*
// This software is subject to the terms of the Eclipse Public License v1.0
// Agreement, available at the following URL:
// http://www.eclipse.org/legal/epl-v10.html.
// Copyright (C) 2007-2011 Julian Hyde
// All Rights Reserved.
// You must accept the terms of that agreement to use this software.
*/
package org.olap4j.driver.xmla;
import org.olap4j.OlapWrapper;
import javax.sql.rowset.RowSetMetaDataImpl;
import java.sql.*;
import java.sql.Date;
import java.math.BigDecimal;
import java.io.InputStream;
import java.io.Reader;
import java.util.*;
import java.net.URL;
/**
* Implementation of {@link ResultSet} which returns 0 rows.
*
* <p>This class is used to implement {@link java.sql.DatabaseMetaData}
* methods for querying object types where those object types never have
* any instances for this particular driver.</p>
*
* <p>This class has sub-classes which implement JDBC 3.0 and JDBC 4.0 APIs;
* it is instantiated using {@link Factory#newEmptyResultSet}.</p>
*
* @author jhyde
* @version $Id: EmptyResultSet.java 397 2011-01-10 09:47:57Z jhyde $
* @since May 24, 2007
*/
abstract class EmptyResultSet implements ResultSet, OlapWrapper {
final XmlaOlap4jConnection olap4jConnection;
private final List<String> headerList;
private final List<List<Object>> rowList;
private int rowOrdinal = -1;
private final RowSetMetaDataImpl metaData = new RowSetMetaDataImpl();
/**
* Creates an EmptyResultSet.
*
* @param olap4jConnection Connection
* @param headerList Column names
* @param rowList List of row values
*/
EmptyResultSet(
XmlaOlap4jConnection olap4jConnection,
List<String> headerList,
List<List<Object>> rowList)
{
this.olap4jConnection = olap4jConnection;
this.headerList = headerList;
this.rowList = rowList;
try {
metaData.setColumnCount(headerList.size());
for (int i = 0; i < headerList.size(); i++) {
metaData.setColumnName(i + 1, headerList.get(i));
}
} catch (SQLException e) {
throw new RuntimeException(e);
}
}
/**
* Returns the value of a given column
* @param columnOrdinal 0-based ordinal
* @return Value
*/
private Object getColumn(int columnOrdinal) {
return rowList.get(rowOrdinal).get(columnOrdinal);
}
private Object getColumn(String columnLabel) throws SQLException {
int column = headerList.indexOf(columnLabel);
if (column < 0) {
throw new SQLException("Column not found: " + columnLabel);
}
return rowList.get(rowOrdinal).get(column);
}
// implement ResultSet
public boolean next() throws SQLException {
// note that if rowOrdinal == rowList.size - 1, we move but then return
// false
if (rowOrdinal < rowList.size()) {
++rowOrdinal;
}
return rowOrdinal < rowList.size();
}
public void close() throws SQLException {
}
public boolean wasNull() throws SQLException {
throw new UnsupportedOperationException();
}
public String getString(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
return o == null ? null : o.toString();
}
public boolean getBoolean(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return false;
}
if (o instanceof Boolean) {
return (Boolean) o;
} else if (o instanceof String) {
return Boolean.valueOf((String) o);
} else {
return !o.equals(0);
}
}
private Number convertToNumber(Object o) {
if (o instanceof Number) {
return (Number)o;
} else {
return new BigDecimal(o.toString());
}
}
public byte getByte(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return 0;
}
return convertToNumber(o).byteValue();
}
public short getShort(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return 0;
}
return convertToNumber(o).shortValue();
}
public int getInt(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return 0;
}
return convertToNumber(o).intValue();
}
public long getLong(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return 0;
}
return ((Number) o).longValue();
}
public float getFloat(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return 0;
}
return convertToNumber(o).floatValue();
}
public double getDouble(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return 0;
}
return convertToNumber(o).doubleValue();
}
public BigDecimal getBigDecimal(
int columnIndex,
int scale)
throws SQLException
{
Object o = getColumn(columnIndex - 1);
if (o == null) {
return null;
}
BigDecimal bd;
if (o instanceof BigDecimal) {
bd = (BigDecimal)o;
} else {
bd = new BigDecimal(o.toString());
}
if (bd.scale() != scale) {
bd = bd.setScale(scale);
}
return bd;
}
public byte[] getBytes(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
return (byte[]) o;
}
public Date getDate(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
return (Date) o;
}
public Time getTime(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
return (Time) o;
}
public Timestamp getTimestamp(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
return (Timestamp) o;
}
public InputStream getAsciiStream(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public InputStream getUnicodeStream(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public InputStream getBinaryStream(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public String getString(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
return o == null ? null : o.toString();
}
public boolean getBoolean(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o instanceof Boolean) {
return (Boolean) o;
} else if (o instanceof String) {
return Boolean.valueOf((String) o);
} else {
return !o.equals(0);
}
}
public byte getByte(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return 0;
}
return convertToNumber(o).byteValue();
}
public short getShort(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return 0;
}
return convertToNumber(o).shortValue();
}
public int getInt(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return 0;
}
return convertToNumber(o).intValue();
}
public long getLong(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return 0;
}
return convertToNumber(o).longValue();
}
public float getFloat(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return 0;
}
return convertToNumber(o).floatValue();
}
public double getDouble(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return 0;
}
return convertToNumber(o).doubleValue();
}
public BigDecimal getBigDecimal(
String columnLabel,
int scale)
throws SQLException
{
Object o = getColumn(columnLabel);
if (o == null) {
return null;
}
BigDecimal bd;
if (o instanceof BigDecimal) {
bd = (BigDecimal)o;
} else {
bd = new BigDecimal(o.toString());
}
if (bd.scale() != scale) {
bd = bd.setScale(scale);
}
return bd;
}
public byte[] getBytes(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
return (byte[]) o;
}
public Date getDate(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
return (Date) o;
}
public Time getTime(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
return (Time) o;
}
public Timestamp getTimestamp(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
return (Timestamp) o;
}
public InputStream getAsciiStream(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public InputStream getUnicodeStream(String columnLabel)
throws SQLException
{
throw new UnsupportedOperationException();
}
public InputStream getBinaryStream(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public SQLWarning getWarnings() throws SQLException {
throw new UnsupportedOperationException();
}
public void clearWarnings() throws SQLException {
throw new UnsupportedOperationException();
}
public String getCursorName() throws SQLException {
throw new UnsupportedOperationException();
}
public ResultSetMetaData getMetaData() throws SQLException {
return metaData;
}
public Object getObject(int columnIndex) throws SQLException {
return getColumn(columnIndex - 1);
}
public Object getObject(String columnLabel) throws SQLException {
return getColumn(columnLabel);
}
public int findColumn(String columnLabel) throws SQLException {
int column = headerList.indexOf(columnLabel);
if (column < 0) {
throw new SQLException("Column not found: " + columnLabel);
}
return column;
}
public Reader getCharacterStream(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public Reader getCharacterStream(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public BigDecimal getBigDecimal(int columnIndex) throws SQLException {
Object o = getColumn(columnIndex - 1);
if (o == null) {
return null;
}
BigDecimal bd;
if (o instanceof BigDecimal) {
bd = (BigDecimal)o;
} else {
bd = new BigDecimal(o.toString());
}
return bd;
}
public BigDecimal getBigDecimal(String columnLabel) throws SQLException {
Object o = getColumn(columnLabel);
if (o == null) {
return null;
}
BigDecimal bd;
if (o instanceof BigDecimal) {
bd = (BigDecimal)o;
} else {
bd = new BigDecimal(o.toString());
}
return bd;
}
public boolean isBeforeFirst() throws SQLException {
return rowOrdinal < 0;
}
public boolean isAfterLast() throws SQLException {
return rowOrdinal >= rowList.size();
}
public boolean isFirst() throws SQLException {
return rowOrdinal == 0;
}
public boolean isLast() throws SQLException {
return rowOrdinal == rowList.size() - 1;
}
public void beforeFirst() throws SQLException {
rowOrdinal = -1;
}
public void afterLast() throws SQLException {
rowOrdinal = rowList.size();
}
public boolean first() throws SQLException {
if (rowList.size() == 0) {
return false;
} else {
rowOrdinal = 0;
return true;
}
}
public boolean last() throws SQLException {
if (rowList.size() == 0) {
return false;
} else {
rowOrdinal = rowList.size() - 1;
return true;
}
}
public int getRow() throws SQLException {
return rowOrdinal + 1; // 1-based
}
public boolean absolute(int row) throws SQLException {
int newRowOrdinal = row - 1;// convert to 0-based
if (newRowOrdinal >= 0 && newRowOrdinal < rowList.size()) {
rowOrdinal = newRowOrdinal;
return true;
} else {
return false;
}
}
public boolean relative(int rows) throws SQLException {
int newRowOrdinal = rowOrdinal + (rows - 1);
if (newRowOrdinal >= 0 && newRowOrdinal < rowList.size()) {
rowOrdinal = newRowOrdinal;
return true;
} else {
return false;
}
}
public boolean previous() throws SQLException {
// converse of next(); note that if rowOrdinal == 0, we decrement
// but return false
if (rowOrdinal >= 0) {
--rowOrdinal;
}
return rowOrdinal >= 0;
}
public void setFetchDirection(int direction) throws SQLException {
throw new UnsupportedOperationException();
}
public int getFetchDirection() throws SQLException {
throw new UnsupportedOperationException();
}
public void setFetchSize(int rows) throws SQLException {
throw new UnsupportedOperationException();
}
public int getFetchSize() throws SQLException {
throw new UnsupportedOperationException();
}
public int getType() throws SQLException {
throw new UnsupportedOperationException();
}
public int getConcurrency() throws SQLException {
throw new UnsupportedOperationException();
}
public boolean rowUpdated() throws SQLException {
throw new UnsupportedOperationException();
}
public boolean rowInserted() throws SQLException {
throw new UnsupportedOperationException();
}
public boolean rowDeleted() throws SQLException {
throw new UnsupportedOperationException();
}
public void updateNull(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBoolean(int columnIndex, boolean x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateByte(int columnIndex, byte x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateShort(int columnIndex, short x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateInt(int columnIndex, int x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateLong(int columnIndex, long x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateFloat(int columnIndex, float x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateDouble(int columnIndex, double x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBigDecimal(
int columnIndex, BigDecimal x) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateString(int columnIndex, String x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBytes(int columnIndex, byte x[]) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateDate(int columnIndex, Date x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateTime(int columnIndex, Time x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateTimestamp(
int columnIndex, Timestamp x) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateAsciiStream(
int columnIndex, InputStream x, int length) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateBinaryStream(
int columnIndex, InputStream x, int length) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateCharacterStream(
int columnIndex, Reader x, int length) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateObject(
int columnIndex, Object x, int scaleOrLength) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateObject(int columnIndex, Object x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateNull(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBoolean(
String columnLabel, boolean x) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateByte(String columnLabel, byte x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateShort(String columnLabel, short x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateInt(String columnLabel, int x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateLong(String columnLabel, long x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateFloat(String columnLabel, float x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateDouble(String columnLabel, double x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBigDecimal(
String columnLabel, BigDecimal x) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateString(String columnLabel, String x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBytes(String columnLabel, byte x[]) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateDate(String columnLabel, Date x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateTime(String columnLabel, Time x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateTimestamp(
String columnLabel, Timestamp x) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateAsciiStream(
String columnLabel, InputStream x, int length) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateBinaryStream(
String columnLabel, InputStream x, int length) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateCharacterStream(
String columnLabel, Reader reader, int length) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateObject(
String columnLabel, Object x, int scaleOrLength) throws SQLException
{
throw new UnsupportedOperationException();
}
public void updateObject(String columnLabel, Object x) throws SQLException {
throw new UnsupportedOperationException();
}
public void insertRow() throws SQLException {
throw new UnsupportedOperationException();
}
public void updateRow() throws SQLException {
throw new UnsupportedOperationException();
}
public void deleteRow() throws SQLException {
throw new UnsupportedOperationException();
}
public void refreshRow() throws SQLException {
throw new UnsupportedOperationException();
}
public void cancelRowUpdates() throws SQLException {
throw new UnsupportedOperationException();
}
public void moveToInsertRow() throws SQLException {
throw new UnsupportedOperationException();
}
public void moveToCurrentRow() throws SQLException {
throw new UnsupportedOperationException();
}
public Statement getStatement() throws SQLException {
throw new UnsupportedOperationException();
}
public Object getObject(
int columnIndex, Map<String, Class<?>> map) throws SQLException
{
throw new UnsupportedOperationException();
}
public Ref getRef(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public Blob getBlob(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public Clob getClob(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public Array getArray(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public Object getObject(
String columnLabel, Map<String, Class<?>> map) throws SQLException
{
throw new UnsupportedOperationException();
}
public Ref getRef(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public Blob getBlob(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public Clob getClob(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public Array getArray(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public Date getDate(int columnIndex, Calendar cal) throws SQLException {
throw new UnsupportedOperationException();
}
public Date getDate(String columnLabel, Calendar cal) throws SQLException {
throw new UnsupportedOperationException();
}
public Time getTime(int columnIndex, Calendar cal) throws SQLException {
throw new UnsupportedOperationException();
}
public Time getTime(String columnLabel, Calendar cal) throws SQLException {
throw new UnsupportedOperationException();
}
public Timestamp getTimestamp(
int columnIndex, Calendar cal) throws SQLException
{
throw new UnsupportedOperationException();
}
public Timestamp getTimestamp(
String columnLabel, Calendar cal) throws SQLException
{
throw new UnsupportedOperationException();
}
public URL getURL(int columnIndex) throws SQLException {
throw new UnsupportedOperationException();
}
public URL getURL(String columnLabel) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateRef(int columnIndex, Ref x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateRef(String columnLabel, Ref x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBlob(int columnIndex, Blob x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateBlob(String columnLabel, Blob x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateClob(int columnIndex, Clob x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateClob(String columnLabel, Clob x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateArray(int columnIndex, Array x) throws SQLException {
throw new UnsupportedOperationException();
}
public void updateArray(String columnLabel, Array x) throws SQLException {
throw new UnsupportedOperationException();
}
// implement Wrapper
public <T> T unwrap(Class<T> iface) throws SQLException {
if (iface.isInstance(this)) {
return iface.cast(this);
}
throw olap4jConnection.helper.createException("cannot cast");
}
public boolean isWrapperFor(Class<?> iface) throws SQLException {
return iface.isInstance(this);
}
}
// End EmptyResultSet.java