Tag.java

package models.dynamo;

import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAutoGeneratedKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import play.Logger;
import play.libs.XPath;

import java.util.ArrayList;
import java.util.List;

/**
 * A Flickr Tag for which we have retrieved some photos
 * User: pvillega
 */
@DynamoDBTable(tableName = "tag")
public class Tag {

    private String id;
    private String name;

    @DynamoDBHashKey
    @DynamoDBAutoGeneratedKey
    public String getId() { return id; }
    public void setId(String id) { this.id = id; }

    @DynamoDBAttribute
    public String getName() { return name; }
    public void setName(String name) { this.name = name; }

    public static List<Tag> convertToTagList(Document xml) {
        List<Tag> tags = new ArrayList<>();

        NodeList xmlTags = XPath.selectNodes("//tag", xml);
        Logger.debug("Tags number: " + xmlTags.getLength());
        for(int i = 0; i < xmlTags.getLength(); i++) {
            Node n = xmlTags.item(i);
            Logger.debug("Tag: " + n.getTextContent());

            Tag t = new Tag();
            t.setName(n.getTextContent());
            tags.add(t);
        }

        return tags;
    }
}