Example usage for org.apache.cassandra.cql3 CQLStatement validate

Introduction

In this page you can find the example usage for org.apache.cassandra.cql3 CQLStatement validate.

Prototype

public void validate(ClientState state);

Source Link

Document

Perform additional validation required by the statment.

Usage

From source file:com.stratio.cassandra.lucene.IndexQueryHandler.java

License:Apache License

public ResultMessage processStatement(CQLStatement statement, QueryState state, QueryOptions options) {

    logger.trace("Process {} @CL.{}", statement, options.getConsistency());
    ClientState clientState = state.getClientState();
    statement.checkAccess(clientState);//  ww  w .  j  av a2 s  .  c om
    statement.validate(clientState);

    // Intercept Lucene index searches
    if (statement instanceof SelectStatement) {
        SelectStatement select = (SelectStatement) statement;
        List<RowFilter.Expression> expressions = select.getRowFilter(options).getExpressions();
        for (RowFilter.Expression expression : expressions) {
            if (expression.isCustom()) {
                RowFilter.CustomExpression customExpression = (RowFilter.CustomExpression) expression;
                String clazz = customExpression.getTargetIndex().options
                        .get(IndexTarget.CUSTOM_INDEX_OPTION_NAME);
                if (clazz.equals(Index.class.getCanonicalName())) {
                    TimeCounter time = TimeCounter.create().start();
                    try {
                        return process(select, state, options, customExpression);
                    } catch (ReflectiveOperationException e) {
                        throw new IndexException(e);
                    } finally {
                        logger.debug("Lucene search total time: {}\n", time.stop());
                    }
                }
            }
        }
    }

    return execute(statement, state, options);
}

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