Examples of org.apache.openjpa.jdbc.sql.Select.select()

Class org.apache.openjpa.jdbc.sql.Select

Examples of org.apache.openjpa.jdbc.sql.Select.select()

org.apache.openjpa.jdbc.sql.Select.select()
Select the given SQL; the given id object is an identifier to use when retrieving the corresponding value from a {@link Result}. @return true if selected

        ClassMapping base = mapping;
        while (base.getJoinablePCSuperclassMapping() != null)
            base = base.getJoinablePCSuperclassMapping();


        Select sel = _sql.newSelect();
        sel.select(base.getPrimaryKeyColumns());
        sel.wherePrimaryKey(sm.getObjectId(), base, this);
        Result exists = sel.execute(this, fetch);
        try {
            if (!exists.next())
                return false;

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    public void customUpdate(OpenJPAStateManager sm, JDBCStore store)
        throws SQLException {
        // select existing value for update
        Column col = field.getColumns()[0];
        Select sel = store.getSQLFactory().newSelect();
        sel.select(col);
        field.wherePrimaryKey(sel, sm, store);
        SQLBuffer sql = sel.toSelect(true, store.getFetchConfiguration());


        Connection conn = store.getConnection();
        PreparedStatement stmnt = null;

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    public void load(OpenJPAStateManager sm, JDBCStore store,
        JDBCFetchConfiguration fetch)
        throws SQLException {
        Column col = field.getColumns()[0];
        Select sel = store.getSQLFactory().newSelect();
        sel.select(col);
        field.wherePrimaryKey(sel, sm, store);


        Result res = sel.execute(store, fetch);
        Object val = null;
        try {

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                sel.setAggregate(true);
                StringBuffer sql = new StringBuffer();
                sql.append("MAX(").
                    append(sel.getColumnAlias(field.getOrderColumn())).
                    append(")");
                sel.select(sql.toString(), field);
                ClassMapping rel = getDefaultElementMapping(false);
                sel.whereForeignKey(getJoinForeignKey(rel),
                    sm.getObjectId(), field.getDefiningMapping(), store);


                Result res = sel.execute(store, fetch);

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                return;
            }
        }


        Select sel = store.getSQLFactory().newSelect();
        sel.select(_cols);
        field.wherePrimaryKey(sel, sm, store);


        Result res = sel.execute(store, fetch);
        Object val = null;
        try {

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    public boolean checkVersion(OpenJPAStateManager sm, JDBCStore store,
        boolean updateVersion)
        throws SQLException {
        Column[] cols = vers.getColumns();
        Select sel = store.getSQLFactory().newSelect();
        sel.select(cols);
        sel.wherePrimaryKey(sm.getObjectId(), vers.getClassMapping(), store);


        Result res = sel.execute(store, null);
        try {
            if (!res.next())

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            sel.select(mapping.getPrimaryKeyColumns(), joins);
        } else {
            // if we have an inner select, we need to select the candidate
            // class' pk columns to guarantee unique instances
            if (inner != null)
                inner.select(mapping.getPrimaryKeyColumns(), joins);


            // select each result value; no need to pass on the eager mode since
            // under projections we always use EAGER_NONE
            boolean pks = sel.getParent() != null;
            for (int i = 0; i < exps.projections.length; i++) {

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                sel.setAggregate(true);
                StringBuilder sql = new StringBuilder();
                sql.append("MAX(").
                    append(sel.getColumnAlias(field.getOrderColumn())).
                    append(")");
                sel.select(sql.toString(), field);
                ClassMapping rel = getDefaultElementMapping(false);
                sel.whereForeignKey(getJoinForeignKey(rel),
                    sm.getObjectId(), field.getDefiningMapping(), store);


                Result res = sel.execute(store, fetch);

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        ClassMapping base = mapping;
        while (base.getJoinablePCSuperclassMapping() != null)
            base = base.getJoinablePCSuperclassMapping();


        Select sel = _sql.newSelect();
        sel.select(base.getPrimaryKeyColumns());
        sel.wherePrimaryKey(sm.getObjectId(), base, this);
        if (_log.isTraceEnabled()) {
            _log.trace("selectPrimaryKey: oid="+sm.getObjectId()+" "+mapping.getDescribedType());
        }
        Result exists = sel.execute(this, fetch);

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        ClassMapping base = mapping;
        while (base.getJoinablePCSuperclassMapping() != null)
            base = base.getJoinablePCSuperclassMapping();


        Select sel = _sql.newSelect();
        sel.select(base.getPrimaryKeyColumns());
        sel.wherePrimaryKey(sm.getObjectId(), base, this);
        Result exists = sel.execute(this, fetch);
        try {
            if (isEmptyResult(exists))
                return false;

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