Examples of org.apache.cassandra.cql3.selection.Selector

Package org.apache.cassandra.cql3.selection

Examples of org.apache.cassandra.cql3.selection.Selector

org.apache.cassandra.cql3.statements.ModificationStatement
A Selector is used to convert the data returned by the storage engine into the data requested by the user. They correspond to the <selector> elements from the select clause.
Since the introduction of aggregation, Selectors cannot be called anymore by multiple threads as they have an internal state.

                statements.add(mst);
            }


            // Note: It's ok at this point to pass a bogus value for the number of bound terms in the BatchState ctor
            // (and no value would be really correct, so we prefer passing a clearly wrong one).
            BatchStatement batch = new BatchStatement(-1, type, statements, Attributes.none());
            Message.Response response = QueryProcessor.processBatch(batch, consistency, state, values, queryOrIdList);


            if (tracingId != null)
                response.setTracingId(tracingId);

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    private static CFMetaData compile(int id, String cql, String keyspace)
    {
        try
        {
            CreateColumnFamilyStatement statement = (CreateColumnFamilyStatement) QueryProcessor.parseStatement(cql).prepare().statement;
            CFMetaData cfmd = newSystemMetadata(keyspace, statement.columnFamily(), id, "", statement.comparator, null);
            statement.applyPropertiesTo(cfmd);
            return cfmd;
        }
        catch (RequestValidationException e)
        {
            throw new RuntimeException(e);

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    private static CFMetaData compile(Integer id, String cql, String keyspace)
    {
        try
        {
            CreateColumnFamilyStatement statement = (CreateColumnFamilyStatement) QueryProcessor.parseStatement(cql).prepare().statement;
            CFMetaData cfmd = newSystemMetadata(keyspace, statement.columnFamily(), id, "", statement.comparator, null);
            statement.applyPropertiesTo(cfmd);
            return cfmd;
        }
        catch (RequestValidationException e)
        {
            throw new RuntimeException(e);

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    private static CFMetaData compile(Integer id, String cql, String keyspace)
    {
        try
        {
            CreateColumnFamilyStatement statement = (CreateColumnFamilyStatement) QueryProcessor.parseStatement(cql).prepare().statement;
            CFMetaData cfmd = newSystemMetadata(keyspace, statement.columnFamily(), id, "", statement.comparator, null);
            statement.applyPropertiesTo(cfmd);
            return cfmd;
        }
        catch (RequestValidationException e)
        {
            throw new RuntimeException(e);

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    private static CFMetaData compile(Integer id, String cql, String keyspace)
    {
        try
        {
            CreateColumnFamilyStatement statement = (CreateColumnFamilyStatement) QueryProcessor.parseStatement(cql).prepare().statement;
            CFMetaData cfmd = newSystemMetadata(keyspace, statement.columnFamily(), id, "", statement.comparator, null);
            statement.applyPropertiesTo(cfmd);
            return cfmd;
        }
        catch (RequestValidationException e)
        {
            throw new RuntimeException(e);

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    private static CFMetaData compile(String cql, String keyspace)
    {
        try
        {
            CreateTableStatement statement = (CreateTableStatement) QueryProcessor.parseStatement(cql).prepare().statement;
            CFMetaData cfm = newSystemMetadata(keyspace, statement.columnFamily(), "", statement.comparator, null);
            statement.applyPropertiesTo(cfm);
            return cfm.rebuild();
        }
        catch (RequestValidationException e)
        {
            throw new RuntimeException(e);

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        read(end);
        return false;
    }


    private KSPropDefs parseKSPropDefs() {
        KSPropDefs defs = new KSPropDefs();
        try {
            read("WITH");
            do {
                String name = readUniqueIdentifier().toLowerCase(Locale.US);
                read("=");
                if (readIf("{")) {
                    defs.addProperty(name, parseMap());
                } else {
                    Expression value = readExpression();
                    defs.addProperty(name, value.optimize(session).getValue(session).toString());
                }
            } while (readIf("AND"));


            defs.validate();
        } catch (SyntaxException e) {
            throw getSyntaxError();
        }
        return defs;
    }

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        if (readIf("AUTHORIZATION")) {
            command.setAuthorization(readUniqueIdentifier());
        } else {
            command.setAuthorization(session.getUser().getName());
        }
        KSPropDefs defs = parseKSPropDefs();
        command.setKSPropDefs(defs);
        return command;
    }

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    protected Prepared parseAlterKeyspace() {
        AlterKeyspace command = new AlterKeyspace(session);
        command.setKeyspaceName(readUniqueIdentifier());


        KSPropDefs defs = parseKSPropDefs();
        command.setKSPropDefs(defs);
        command.validate();
        return command;
    }

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                                                                    statement.getBoundsTerms(),
                                                                    queryValues.size()));
                if (!(statement instanceof ModificationStatement))
                    throw new InvalidRequestException("Invalid statement in batch: only UPDATE, INSERT and DELETE statements are allowed.");


                ModificationStatement mst = (ModificationStatement)statement;
                if (mst.isCounter())
                {
                    if (type != BatchStatement.Type.COUNTER)
                        throw new InvalidRequestException("Cannot include counter statement in a non-counter batch");
                }
                else

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