Example usage for org.apache.cassandra.cql3 QueryProcessor parseStatement

Introduction

In this page you can find the example usage for org.apache.cassandra.cql3 QueryProcessor parseStatement.

Prototype

public static CQLStatement.Raw parseStatement(String queryStr) throws SyntaxException 

Source Link

Usage

From source file:com.fullcontact.sstable.hadoop.mapreduce.SSTableRecordReader.java

License:Apache License

private static CreateColumnFamilyStatement getCreateColumnFamilyStatement(String cql) {
    CreateColumnFamilyStatement statement;
    try {// ww  w  .j a  v  a  2 s .  c o  m
        statement = (CreateColumnFamilyStatement) QueryProcessor.parseStatement(cql).prepare().statement;
    } catch (RequestValidationException e) {
        // Cannot proceed if an error occurs
        throw new RuntimeException("Error configuring SSTable reader. Cannot proceed", e);
    }
    return statement;
}

---

From source file:com.protectwise.cassandra.retrospect.deletion.RuleBasedDeletionConvictor.java

License:Apache License

/**
 * Called by {{{DeletingCompactionStrategy.validateOptions}}} to allow the convictor to
 * read and validate convictor-specific options at the same time.
 * <p/>/*  w  w w.j a  v a2  s .  c om*/
 * See {@link org.apache.cassandra.db.compaction.AbstractCompactionStrategy#validateOptions(Map)}
 *
 * @param options
 * @return
 */
public static Map<String, String> validateOptions(Map<String, String> options) throws ConfigurationException {
    String select = options.get(RULES_STATEMENT_KEY);
    if (select == null) {
        throw new ConfigurationException(RULES_STATEMENT_KEY + " is a required parameter");
    }
    try {
        ParsedStatement stmt = QueryProcessor.parseStatement(select);
        if (!(stmt instanceof SelectStatement.RawStatement)) {
            throw new ConfigurationException(RULES_STATEMENT_KEY + " must be a SELECT statement");
        }
        SelectStatement.RawStatement sel = (SelectStatement.RawStatement) stmt;

        try {
            sel.keyspace();
        } catch (AssertionError e) {
            throw new ConfigurationException(
                    RULES_STATEMENT_KEY + " must define a fully qualified keyspace.tablename");
        }

        // This will validate that the data types of the columns in the select are correct.
        parseRules(select);
    } catch (SyntaxException e) {
        throw new ConfigurationException("Invalid select statement: " + e.getMessage(), e);
    }

    options.remove(RULES_STATEMENT_KEY);
    return options;
}

---

From source file:com.protectwise.cassandra.retrospect.deletion.RuleBasedLateTTLConvictor.java

License:Apache License

/**
 * Called by {{{DeletingCompactionStrategy.validateOptions}}} to allow the convictor to
 * read and validate convictor-specific options at the same time.
 * <p/>/*from   w  ww  . ja  v a 2 s.  c om*/
 * See {@link org.apache.cassandra.db.compaction.AbstractCompactionStrategy#validateOptions(Map)}
 *
 * @param options
 * @return
 */
public static Map<String, String> validateOptions(Map<String, String> options) throws ConfigurationException {
    String select = options.get(RULES_STATEMENT_KEY);
    if (select == null) {
        throw new ConfigurationException(RULES_STATEMENT_KEY + " is a required parameter");
    }
    try {
        ParsedStatement stmt = QueryProcessor.parseStatement(select);
        if (!(stmt instanceof SelectStatement.RawStatement)) {
            throw new ConfigurationException(RULES_STATEMENT_KEY + " must be a SELECT statement");
        }
        SelectStatement.RawStatement sel = (SelectStatement.RawStatement) stmt;

        try {
            sel.keyspace();
        } catch (AssertionError e) {
            throw new ConfigurationException(
                    RULES_STATEMENT_KEY + " must define a fully qualified keyspace.tablename");
        }

        // This will validate that the data types of the columns in the select are correct.
        parseRules(select);
    } catch (SyntaxException e) {
        throw new ConfigurationException("Invalid select statement: " + e.getMessage(), e);
    }

    String defaultTTL = options.get(DEFAULT_TTL_KEY);
    if (defaultTTL != null) {
        try {
            Long.parseLong(defaultTTL);
        } catch (NumberFormatException e) {
            throw new ConfigurationException(
                    "Invalid value '" + options.get(DEFAULT_TTL_KEY) + "' for " + DEFAULT_TTL_KEY, e);
        }
    }

    options.remove(DEFAULT_TTL_KEY);
    options.remove(RULES_STATEMENT_KEY);
    return options;
}

---