Examples of com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper

Package com.vaadin.data.util.sqlcontainer.query.generator

Examples of com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper

com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper
StatementHelper is a simple helper class that assists TableQuery and the query generators in filling a PreparedStatement. The actual statement is generated by the query generator methods, but the resulting statement and all the parameter values are stored in an instance of StatementHelper. This class will also fill the values with correct setters into the PreparedStatement on request.

        String query = queryString;
        if (delegate != null) {
            /* First try using prepared statement */
            if (delegate instanceof FreeformStatementDelegate) {
                try {
                    StatementHelper sh = ((FreeformStatementDelegate) delegate)
                            .getQueryStatement(offset, pagelength);
                    PreparedStatement pstmt = getConnection().prepareStatement(
                            sh.getQueryString());
                    sh.setParameterValuesToStatement(pstmt);
                    return pstmt.executeQuery();
                } catch (UnsupportedOperationException e) {
                    // Statement generation not supported, continue...
                }
            }

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            return false;
        }
        /* First try using prepared statement */
        if (delegate instanceof FreeformStatementDelegate) {
            try {
                StatementHelper sh = ((FreeformStatementDelegate) delegate)
                        .getCountStatement();
                if (sh != null && sh.getQueryString() != null
                        && sh.getQueryString().length() > 0) {
                    return true;
                }
            } catch (UnsupportedOperationException e) {
                // Statement generation not supported, continue...
            }

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        String query = null;
        boolean contains = false;
        if (delegate != null) {
            if (delegate instanceof FreeformStatementDelegate) {
                try {
                    StatementHelper sh = ((FreeformStatementDelegate) delegate)
                            .getContainsRowQueryStatement(keys);


                    PreparedStatement pstmt = null;
                    ResultSet rs = null;
                    Connection c = getConnection();
                    try {
                        pstmt = c.prepareStatement(sh.getQueryString());
                        sh.setParameterValuesToStatement(pstmt);
                        rs = pstmt.executeQuery();
                        contains = rs.next();
                        return contains;
                    } finally {
                        releaseConnection(c, pstmt, rs);

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     * 
     * @see com.vaadin.addon.sqlcontainer.query.QueryDelegate#getCount()
     */
    public int getCount() throws SQLException {
        getLogger().log(Level.FINE, "Fetching count...");
        StatementHelper sh = sqlGenerator.generateSelectQuery(tableName,
                filters, null, 0, 0, "COUNT(*)");
        boolean shouldCloseTransaction = false;
        if (!isInTransaction()) {
            shouldCloseTransaction = true;
            beginTransaction();

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     * 
     * @see com.vaadin.addon.sqlcontainer.query.QueryDelegate#getResults(int,
     * int)
     */
    public ResultSet getResults(int offset, int pagelength) throws SQLException {
        StatementHelper sh;
        /*
         * If no ordering is explicitly set, results will be ordered by the
         * first primary key column.
         */
        if (orderBys == null || orderBys.isEmpty()) {

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    public int storeRow(RowItem row) throws UnsupportedOperationException,
            SQLException {
        if (row == null) {
            throw new IllegalArgumentException("Row argument must be non-null.");
        }
        StatementHelper sh;
        int result = 0;
        if (row.getId() instanceof TemporaryRowId) {
            setVersionColumnFlagInProperty(row);
            sh = sqlGenerator.generateInsertQuery(tableName, row);
            result = executeUpdateReturnKeys(sh, row);

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    public RowId storeRowImmediately(RowItem row) throws SQLException {
        beginTransaction();
        /* Set version column, if one is provided */
        setVersionColumnFlagInProperty(row);
        /* Generate query */
        StatementHelper sh = sqlGenerator.generateInsertQuery(tableName, row);
        Connection connection = null;
        PreparedStatement pstmt = null;
        ResultSet generatedKeys = null;
        connection = getConnection();
        try {
            pstmt = connection.prepareStatement(sh.getQueryString(),
                    primaryKeyColumns.toArray(new String[0]));
            sh.setParameterValuesToStatement(pstmt);
            getLogger().log(Level.FINE, "DB -> {0}", sh.getQueryString());
            int result = pstmt.executeUpdate();
            RowId newId = null;
            if (result > 0) {
                /*
                 * If affected rows exist, we'll get the new RowId, commit the

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        int ix = 0;
        for (String colName : primaryKeyColumns) {
            filtersAndKeys.add(new Equal(colName, keys[ix]));
            ix++;
        }
        StatementHelper sh = sqlGenerator.generateSelectQuery(tableName,
                filtersAndKeys, orderBys, 0, 0, "*");


        boolean shouldCloseTransaction = false;
        if (!isInTransaction()) {
            shouldCloseTransaction = true;

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     * 
     * @see com.vaadin.addon.sqlcontainer.query.QueryDelegate#getCount()
     */
    public int getCount() throws SQLException {
        logger.log(Level.FINE, "Fetching count...");
        StatementHelper sh = sqlGenerator.generateSelectQuery(tableName,
                filters, null, 0, 0, "COUNT(*)");
        boolean shouldCloseTransaction = false;
        if (!transactionOpen) {
            shouldCloseTransaction = true;
            beginTransaction();

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     * 
     * @see com.vaadin.addon.sqlcontainer.query.QueryDelegate#getResults(int,
     * int)
     */
    public ResultSet getResults(int offset, int pagelength) throws SQLException {
        StatementHelper sh;
        /*
         * If no ordering is explicitly set, results will be ordered by the
         * first primary key column.
         */
        if (orderBys == null || orderBys.isEmpty()) {

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Related Classes of com.vaadin.data.util.sqlcontainer.query.generator.StatementHelper

com.vaadin.data.util.sqlcontainer.FreeformQueryUtil

com.vaadin.data.util.sqlcontainer.generator.SQLGeneratorsTest

com.vaadin.data.util.sqlcontainer.generator.StatementHelperTest

com.vaadin.data.util.sqlcontainer.query.FreeformQuery

com.vaadin.data.util.sqlcontainer.query.QueryBuilderTest

com.vaadin.data.util.sqlcontainer.query.TableQuery

com.vaadin.data.util.sqlcontainer.SQLContainerTest

com.vaadin.data.util.sqlcontainer.TicketTests

java.sql.SQLException

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