Package org.h2.tools

Examples of org.h2.tools.SimpleResultSet


                    "<table cellspacing=0 cellpadding=0 id=\"editTable\">");
        } else {
            buff.append("<table cellspacing=0 cellpadding=0>");
        }
        if (metadata) {
            SimpleResultSet r = new SimpleResultSet();
            r.addColumn("#", Types.INTEGER, 0, 0);
            r.addColumn("label", Types.VARCHAR, 0, 0);
            r.addColumn("catalog", Types.VARCHAR, 0, 0);
            r.addColumn("schema", Types.VARCHAR, 0, 0);
            r.addColumn("table", Types.VARCHAR, 0, 0);
            r.addColumn("column", Types.VARCHAR, 0, 0);
            r.addColumn("type", Types.INTEGER, 0, 0);
            r.addColumn("typeName", Types.VARCHAR, 0, 0);
            r.addColumn("class", Types.VARCHAR, 0, 0);
            r.addColumn("precision", Types.INTEGER, 0, 0);
            r.addColumn("scale", Types.INTEGER, 0, 0);
            r.addColumn("displaySize", Types.INTEGER, 0, 0);
            r.addColumn("autoIncrement", Types.BOOLEAN, 0, 0);
            r.addColumn("caseSensitive", Types.BOOLEAN, 0, 0);
            r.addColumn("currency", Types.BOOLEAN, 0, 0);
            r.addColumn("nullable", Types.INTEGER, 0, 0);
            r.addColumn("readOnly", Types.BOOLEAN, 0, 0);
            r.addColumn("searchable", Types.BOOLEAN, 0, 0);
            r.addColumn("signed", Types.BOOLEAN, 0, 0);
            r.addColumn("writable", Types.BOOLEAN, 0, 0);
            r.addColumn("definitelyWritable", Types.BOOLEAN, 0, 0);
            ResultSetMetaData m = rs.getMetaData();
            for (int i = 1; i <= m.getColumnCount(); i++) {
                r.addRow(i,
                        m.getColumnLabel(i),
                        m.getCatalogName(i),
                        m.getSchemaName(i),
                        m.getTableName(i),
                        m.getColumnName(i),
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                list[i] = readValue();
            }
            return ValueArray.get(componentType, list);
        }
        case Value.RESULT_SET: {
            SimpleResultSet rs = new SimpleResultSet();
            int columns = readInt();
            for (int i = 0; i < columns; i++) {
                rs.addColumn(readString(), readInt(), readInt(), readInt());
            }
            while (true) {
                if (!readBoolean()) {
                    break;
                }
                Object[] o = new Object[columns];
                for (int i = 0; i < columns; i++) {
                    o[i] = readValue().getObject();
                }
                rs.addRow(o);
            }
            return ValueResultSet.get(rs);
        }
        default:
            throw DbException.get(ErrorCode.CONNECTION_BROKEN_1, "type=" + type);
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    public static ResultSet linkSchema(Connection conn, String targetSchema, String driver, String url, String user,
            String password, String sourceSchema) {
        Connection c2 = null;
        Statement stat = null;
        ResultSet rs = null;
        SimpleResultSet result = new SimpleResultSet();
        result.addColumn("TABLE_NAME", Types.VARCHAR, Integer.MAX_VALUE, 0);
        try {
            c2 = JdbcUtils.getConnection(driver, url, user, password);
            stat = conn.createStatement();
            stat.execute("CREATE SCHEMA IF NOT EXISTS " + StringUtils.quoteIdentifier(targetSchema));
            rs = c2.getMetaData().getTables(null, sourceSchema, null, null);
            while (rs.next()) {
                String table = rs.getString("TABLE_NAME");
                StringBuilder buff = new StringBuilder();
                buff.append("DROP TABLE IF EXISTS ").
                    append(StringUtils.quoteIdentifier(targetSchema)).
                    append('.').
                    append(StringUtils.quoteIdentifier(table));
                stat.execute(buff.toString());
                buff = new StringBuilder();
                buff.append("CREATE LINKED TABLE ").
                    append(StringUtils.quoteIdentifier(targetSchema)).
                    append('.').
                    append(StringUtils.quoteIdentifier(table)).
                    append('(').
                    append(StringUtils.quoteStringSQL(driver)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(url)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(user)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(password)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(table)).
                    append(')');
                stat.execute(buff.toString());
                result.addRow(table);
            }
        } catch (SQLException e) {
            throw DbException.convert(e);
        } finally {
            JdbcUtils.closeSilently(rs);
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        debugCodeCall("free");
        value = null;
    }

    private static ResultSet getResultSet(Object[] array, long offset) {
        SimpleResultSet rs = new SimpleResultSet();
        rs.addColumn("INDEX", Types.BIGINT, 0, 0);
        // TODO array result set: there are multiple data types possible
        rs.addColumn("VALUE", Types.NULL, 0, 0);
        for (int i = 0; i < array.length; i++) {
            rs.addRow(Long.valueOf(offset + i + 1), array[i]);
        }
        return rs;
    }
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     */
    public static ValueResultSet getCopy(ResultSet rs, int maxrows) {
        try {
            ResultSetMetaData meta = rs.getMetaData();
            int columnCount = meta.getColumnCount();
            SimpleResultSet simple = new SimpleResultSet();
            simple.setAutoClose(false);
            ValueResultSet val = new ValueResultSet(simple);
            for (int i = 0; i < columnCount; i++) {
                String name = meta.getColumnLabel(i + 1);
                int sqlType = meta.getColumnType(i + 1);
                int precision = meta.getPrecision(i + 1);
                int scale = meta.getScale(i + 1);
                simple.addColumn(name, sqlType, precision, scale);
            }
            for (int i = 0; i < maxrows && rs.next(); i++) {
                Object[] list = new Object[columnCount];
                for (int j = 0; j < columnCount; j++) {
                    list[j] = rs.getObject(j + 1);
                }
                simple.addRow(list);
            }
            return val;
        } catch (SQLException e) {
            throw DbException.convert(e);
        }
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    public Value convertPrecision(long precision, boolean force) {
        if (!force) {
            return this;
        }
        return ValueResultSet.get(new SimpleResultSet());
    }
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     * @param data whether the raw data should be returned
     * @return the result set
     */
    protected static ResultSet search(Connection conn, String text,
            int limit, int offset, boolean data) throws SQLException {
        SimpleResultSet result = createResultSet(data);
        if (conn.getMetaData().getURL().startsWith("jdbc:columnlist:")) {
            // this is just to query the result set columns
            return result;
        }
        if (text == null || text.trim().length() == 0) {
            return result;
        }
        try {
            IndexAccess access = getIndexAccess(conn);
            /*## LUCENE2 ##
            access.modifier.flush();
            String path = getIndexPath(conn);
            IndexReader reader = IndexReader.open(path);
            Analyzer analyzer = new StandardAnalyzer();
            Searcher searcher = new IndexSearcher(reader);
            QueryParser parser = new QueryParser(LUCENE_FIELD_DATA, analyzer);
            Query query = parser.parse(text);
            Hits hits = searcher.search(query);
            int max = hits.length();
            if (limit == 0) {
                limit = max;
            }
            for (int i = 0; i < limit && i + offset < max; i++) {
                Document doc = hits.doc(i + offset);
                float score = hits.score(i + offset);
            //*/
            //## LUCENE3 ##
            // take a reference as the searcher may change
            Searcher searcher = access.searcher;
            // reuse the same analyzer; it's thread-safe;
            // also allows subclasses to control the analyzer used.
            Analyzer analyzer = access.writer.getAnalyzer();
            QueryParser parser = new QueryParser(Version.LUCENE_30,
                    LUCENE_FIELD_DATA, analyzer);
            Query query = parser.parse(text);
            // Lucene 3 insists on a hard limit and will not provide
            // a total hits value. Take at least 100 which is
            // an optimal limit for Lucene as any more
            // will trigger writing results to disk.
            int maxResults = (limit == 0 ? 100 : limit) + offset;
            TopDocs docs = searcher.search(query, maxResults);
            if (limit == 0) {
                limit = docs.totalHits;
            }
            for (int i = 0, len = docs.scoreDocs.length;
                    i < limit && i + offset < docs.totalHits
                    && i + offset < len; i++) {
                ScoreDoc sd = docs.scoreDocs[i + offset];
                Document doc = searcher.doc(sd.doc);
                float score = sd.score;
                //*/
                String q = doc.get(LUCENE_FIELD_QUERY);
                if (data) {
                    int idx = q.indexOf(" WHERE ");
                    JdbcConnection c = (JdbcConnection) conn;
                    Session session = (Session) c.getSession();
                    Parser p = new Parser(session);
                    String tab = q.substring(0, idx);
                    ExpressionColumn expr = (ExpressionColumn) p.parseExpression(tab);
                    String schemaName = expr.getOriginalTableAliasName();
                    String tableName = expr.getColumnName();
                    q = q.substring(idx + " WHERE ".length());
                    Object[][] columnData = parseKey(conn, q);
                    result.addRow(
                            schemaName,
                            tableName,
                            columnData[0],
                            columnData[1],
                            score);
                } else {
                    result.addRow(q, score);
                }
            }
            /*## LUCENE2 ##
            // TODO keep it open if possible
            reader.close();
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     * @param data true if the result set should contain the primary key data as
     *            an array.
     * @return the empty result set
     */
    protected static SimpleResultSet createResultSet(boolean data) {
        SimpleResultSet result = new SimpleResultSet();
        if (data) {
            result.addColumn(FullText.FIELD_SCHEMA, Types.VARCHAR, 0, 0);
            result.addColumn(FullText.FIELD_TABLE, Types.VARCHAR, 0, 0);
            result.addColumn(FullText.FIELD_COLUMNS, Types.ARRAY, 0, 0);
            result.addColumn(FullText.FIELD_KEYS, Types.ARRAY, 0, 0);
        } else {
            result.addColumn(FullText.FIELD_QUERY, Types.VARCHAR, 0, 0);
        }
        result.addColumn(FullText.FIELD_SCORE, Types.FLOAT, 0, 0);
        return result;
    }
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     * @param data whether the raw data should be returned
     * @return the result set
     */
    protected static ResultSet search(Connection conn, String text, int limit,
            int offset, boolean data) throws SQLException {
        SimpleResultSet result = createResultSet(data);
        if (conn.getMetaData().getURL().startsWith("jdbc:columnlist:")) {
            // this is just to query the result set columns
            return result;
        }
        if (text == null || text.trim().length() == 0) {
            return result;
        }
        FullTextSettings setting = FullTextSettings.getInstance(conn);
        if (!setting.isInitialized()) {
            init(conn);
        }
        HashSet<String> words = New.hashSet();
        addWords(setting, words, text);
        HashSet<Integer> rIds = null, lastRowIds = null;
        HashMap<String, Integer> allWords = setting.getWordList();

        PreparedStatement prepSelectMapByWordId = setting.prepare(conn, SELECT_MAP_BY_WORD_ID);
        for (String word : words) {
            lastRowIds = rIds;
            rIds = New.hashSet();
            Integer wId = allWords.get(word);
            if (wId == null) {
                continue;
            }
            prepSelectMapByWordId.setInt(1, wId.intValue());
            ResultSet rs = prepSelectMapByWordId.executeQuery();
            while (rs.next()) {
                Integer rId = rs.getInt(1);
                if (lastRowIds == null || lastRowIds.contains(rId)) {
                    rIds.add(rId);
                }
            }
        }
        if (rIds == null || rIds.size() == 0) {
            return result;
        }
        PreparedStatement prepSelectRowById = setting.prepare(conn, SELECT_ROW_BY_ID);
        int rowCount = 0;
        for (int rowId : rIds) {
            prepSelectRowById.setInt(1, rowId);
            ResultSet rs = prepSelectRowById.executeQuery();
            if (!rs.next()) {
                continue;
            }
            if (offset > 0) {
                offset--;
            } else {
                String key = rs.getString(1);
                int indexId = rs.getInt(2);
                IndexInfo index = setting.getIndexInfo(indexId);
                if (data) {
                    Object[][] columnData = parseKey(conn, key);
                    result.addRow(
                            index.schema,
                            index.table,
                            columnData[0],
                            columnData[1],
                            1.0);
                } else {
                    String query = StringUtils.quoteIdentifier(index.schema) +
                        "." + StringUtils.quoteIdentifier(index.table) +
                        " WHERE " + key;
                    result.addRow(query, 1.0);
                }
                rowCount++;
                if (limit > 0 && rowCount >= limit) {
                    break;
                }
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    public static ResultSet linkSchema(Connection conn, String targetSchema, String driver, String url, String user,
            String password, String sourceSchema) {
        Connection c2 = null;
        Statement stat = null;
        ResultSet rs = null;
        SimpleResultSet result = new SimpleResultSet();
        result.addColumn("TABLE_NAME", Types.VARCHAR, Integer.MAX_VALUE, 0);
        try {
            c2 = JdbcUtils.getConnection(driver, url, user, password);
            stat = conn.createStatement();
            stat.execute("CREATE SCHEMA IF NOT EXISTS " + StringUtils.quoteIdentifier(targetSchema));
            rs = c2.getMetaData().getTables(null, sourceSchema, null, null);
            while (rs.next()) {
                String table = rs.getString("TABLE_NAME");
                StringBuilder buff = new StringBuilder();
                buff.append("DROP TABLE IF EXISTS ").
                    append(StringUtils.quoteIdentifier(targetSchema)).
                    append('.').
                    append(StringUtils.quoteIdentifier(table));
                stat.execute(buff.toString());
                buff = new StringBuilder();
                buff.append("CREATE LINKED TABLE ").
                    append(StringUtils.quoteIdentifier(targetSchema)).
                    append('.').
                    append(StringUtils.quoteIdentifier(table)).
                    append('(').
                    append(StringUtils.quoteStringSQL(driver)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(url)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(user)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(password)).
                    append(", ").
                    append(StringUtils.quoteStringSQL(table)).
                    append(')');
                stat.execute(buff.toString());
                result.addRow(table);
            }
        } catch (SQLException e) {
            throw DbException.convert(e);
        } finally {
            JdbcUtils.closeSilently(rs);
View Full Code Here

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