public static void setWrappedInputFormat(Class<?> realInputFormatClass, Configuration conf) {
HadoopUtils.setClassConf(conf, CLASS_CONF_KEY, realInputFormatClass);
}
/**
* Get the queries to run over the indexes These are the queries in the same form as they were
* passed to {@link #setQueries} above
*
* @param conf job conf
* @return queries as passed to {@link #setQueries}
* @throws IOException
*/
@SuppressWarnings("unchecked")
public static List<String> getQueries(Configuration conf) throws IOException {
return Preconditions.checkNotNull(
HadoopUtils.readStringListFromConfAsJson(QUERIES_KEY, conf),
"You must call LuceneIndexInputFormat.setQueries()");
}
public static void setClassConf(Class<?> clazz, Configuration conf) {
HadoopUtils.setClassConf(conf, CLASS_CONF_KEY, clazz);
}
/**
* Set the queries to run over the indexes These can be Strings suitable for parsing with a
* QueryParser, or they can be a custom serialized Query object. They have to be Strings so that
* they can be written to the job conf. They will be deserialized / parsed by the abstract method
* {@link LuceneIndexRecordReader#deserializeQuery(String)}
*
* @param queries queries to run over the indexes
* @param conf job conf
* @throws IOException
*/
public static void setQueries(List<String> queries, Configuration conf) throws IOException {
Preconditions.checkNotNull(queries);
Preconditions.checkArgument(!queries.isEmpty());
HadoopUtils.writeStringListToConfAsJson(QUERIES_KEY, queries, conf);
}