Package com.hp.hpl.jena.sdb.core.sqlexpr

Examples of com.hp.hpl.jena.sdb.core.sqlexpr.SqlColumn

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            if ( e == null )
            {
                // Should be a column mentioned in the SELECT which is not mentioned in this block
                continue ;
            }
            SqlColumn vCol = e.getColumn() ;
   
            SqlTable table = vCol.getTable() ;
            String sqlVarName = allocSqlName(v) ;
           
            // Need to allocate aliases because otherwise we need to access
            // "table.column" as a label and "." is illegal in a label

            String vLex = SQLUtils.gen(sqlVarName,"lex") ;
            // Call overrideable helper method for lex column (Oracle)
            SqlColumn cLex = getLexSqlColumn(table);

            String vLexNChar = SQLUtils.gen(sqlVarName,"lexNChar") ;
            // Call overrideable helper method for lex column (Oracle)
            SqlColumn cLexNChar = getLexNCharSqlColumn(table);
   
            String vDatatype = SQLUtils.gen(sqlVarName,"datatype") ;
            SqlColumn cDatatype = new SqlColumn(table, "datatype") ;
   
            String vLang = SQLUtils.gen(sqlVarName,"lang") ;
            SqlColumn cLang = new SqlColumn(table, "lang") ;
   
            String vType = SQLUtils.gen(sqlVarName,"type") ;
            SqlColumn cType = new SqlColumn(table, "type") ;
   
            addProject(cLex, vLex) ;
            // Oracle NCLOB support
            if (cLexNChar != null) {
                addProject(cLexNChar, vLexNChar);
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     * @see SQLBridge2Oracle
     * @param table
     *
     */
    protected SqlColumn getLexSqlColumn(SqlTable table) {
        return new SqlColumn(table, "lex") ;
    }
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        ScopeEntry e2 = sqlNode.getNodeScope().findScopeForVar(var) ;
        if ( e2 != null )
            // Already there
            return sqlNode ;
       
        SqlColumn c1 = e1.getColumn() ;
        // Not in scope -- add a table to get it
        TableDescNodes nodeTableDesc = request.getStore().getNodeTableDesc() ;
       
        String tableAlias = request.genId(NodeBase) ;
        SqlTable nTable = new SqlTable(tableAlias, nodeTableDesc.getTableName()) ;
        String nodeKeyColName = nodeTableDesc.getNodeRefColName() ;
        SqlColumn c2 = new SqlColumn(nTable, nodeKeyColName) ;

        nTable.setValueColumnForVar(var, c2) ;
        // Condition for value: triple table column = node table id/hash
        nTable.addNote("Var: "+var) ;
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        Var v = Var.alloc(g) ;

        // Inner SELECT SQL: (SELECT DISTINCT g FROM Quads)
        TableDescQuads quads = request.getStore().getQuadTableDesc() ;
        SqlTable sqlTableQ = new SqlTable(quads.getTableName()) ;
        sqlTableQ.setIdColumnForVar(v, new SqlColumn(sqlTableQ, quads.getGraphColName())) ;
        SqlNode sqlNodeQ = SqlSelectBlock.distinct(request, sqlTableQ) ;
       
        // Will have the value left join added later.
        return new OpSQL(sqlNodeQ, opDatasetNames, request) ;
    }
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        vars = new ArrayList<Var>() ;
        for (String colName : Iter.iter(desc.colNames()) )
        {
            Var var = Var.alloc(colName) ;
            vars.add(var) ;
            sqlTable.setIdColumnForVar(var, new SqlColumn(sqlTable, colName)) ;
        }
    }
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            _add(c) ;
    }
   
    private void _add(ColAlias c)
    {
        SqlColumn col = c.getColumn() ;
        SqlColumn aliasCol = c.getAlias() ;
        c.check(getAliasName()) ;
//       
//        if ( aliasCol.getTable() != null && aliasCol.getTable().getAliasName().equals(getAliasName()) )
//            throw new SDBInternalError("Attempt to project to a column with different alias: "+col+" -> "+aliasCol) ;
        cols.add(c) ;
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        String x = "" ;
        String sep = "" ;
   
        for ( ScopeEntry e : scope.findScopes() )
        {
            SqlColumn oldCol = e.getColumn() ;
            Var v = e.getVar() ;
            String colName = gen.next() ;
            SqlColumn newCol = new SqlColumn(vTable, colName) ;
            this.add(new ColAlias(oldCol, newCol)) ;
            newScope.setColumnForVar(v, newCol) ;
            // Annotations
            x = String.format("%s%s%s:(%s=>%s)", x, sep, v, oldCol, newCol) ;
            sep = " " ;
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//            LoggerFactory.getLogger(SqlCoalesce.class).warn("NodeScope is not empty") ;
       
        for ( Var v : coalesceVars )
        {
            String sqlColName = request.genId(AliasBase) ;
            SqlColumn col = new SqlColumn(table, sqlColName) ;
            idScope.setAlias(v, col) ;
            annotation.addAnnotation(v+" as "+col) ;
            // TODO Value
        }
       
        // Aliases.
        // Not coalesce variables.
        for ( Var v : nonCoalesceVars )
        {
            if ( coalesceVars.contains(v) )
            {
                LoggerFactory.getLogger(SqlCoalesce.class).warn("Variable in coalesce and non-coalesce sets: "+v) ;
                continue ;
            }
            String sqlColName = request.genId(AliasBase) ;
            SqlColumn col = new SqlColumn(table, sqlColName) ;
            idScope.setAlias(v, col) ;
            annotation.addAnnotation(v+" as "+col) ;
            // TODO Value
        }
        annotation.setAnnotation(this) ;
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    }
   
    @Override
    protected SqlColumn getLexSqlColumn(SqlTable table) {
       
        return new SqlColumn(table, "lex") {
            @Override
            public String getFullColumnName() {
                String col = getTable().getAliasName()+"."+getColumnName();
                return  "CASE WHEN LENGTH("+col+
                        ") <= 2000 THEN NULL ELSE "+col+" END";             
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    }
   
    @Override
    protected SqlColumn getLexNCharSqlColumn(SqlTable table) {
       
        return new SqlColumn(table, "lexNChar") {
            @Override
            public String getFullColumnName() {
                String col = getTable().getAliasName()+".lex";
                return "CASE WHEN LENGTH("+col+") <= 2000 THEN TO_NCHAR("+
                       col+") ELSE NULL END ";             
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Related Classes of com.hp.hpl.jena.sdb.core.sqlexpr.SqlColumn

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  • com.hp.hpl.jena.sdb.core.sqlnode.SqlNodeTextVisitor
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  • com.hp.hpl.jena.sdb.core.sqlnode.SqlSelectBlock
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