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56 lines
1.7 KiB
56 lines
1.7 KiB
package com.github.jreddit.parser.listing;
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import java.util.LinkedList;
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import java.util.List;
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import org.json.simple.parser.ParseException;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import com.github.jreddit.parser.entity.Comment;
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import com.github.jreddit.parser.entity.Thing;
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import com.github.jreddit.parser.exception.RedditParseException;
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public class CommentsListingParser extends RedditListingParser {
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private static final Logger LOGGER = LoggerFactory.getLogger(CommentsListingParser.class);
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/**
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* Parse JSON received from reddit into a list of comments.
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* This parser expects the JSON to be of a listing of comments.<br>
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* <br>
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* <i>Note: this parsing can only be performed on listings of comments, not on
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* a comment tree of a submission.</i>
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*
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* @param jsonText JSON Text
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* @return Parsed list of comments
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*
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* @throws ParseException
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* @throws RedditRequestException
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*/
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public List<Comment> parse(String jsonText) throws RedditParseException {
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// Parse to a list of things
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List<Thing> things = this.parseGeneric(jsonText);
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// List of comment and submission mixed elements
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List<Comment> comments = new LinkedList<Comment>();
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// Iterate over things
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for (Thing t : things) {
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if (t instanceof Comment) {
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comments.add((Comment) t);
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} else {
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LOGGER.warn("Encountered an unexpected reddit thing (" + t.getKind().value() + "), skipping it.");
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}
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}
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// Return resulting comments list
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return comments;
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}
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}
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