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com.box.sdk.BoxItemIterator Maven / Gradle / Ivy

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package com.box.sdk;

import static com.box.sdk.PagingParameters.offset;

import com.eclipsesource.json.JsonObject;
import java.net.URL;
import java.util.Iterator;

class BoxItemIterator implements Iterator {
    private static final long LIMIT = 1000;

    private final BoxAPIConnection api;
    private final JsonIterator iterator;

    BoxItemIterator(BoxAPIConnection api, URL url, PagingParameters pagingParameters) {
        this.api = api;
        this.iterator = new JsonIterator(api, url, pagingParameters);
        this.iterator.setFilter(jsonObject -> {
            String type = jsonObject.get("type").asString();
            return (type.equals("file") || type.equals("folder") || type.equals("web_link"));
        });
    }

    BoxItemIterator(BoxAPIConnection api, URL url) {
        this(api, url, offset(0, LIMIT));
    }

    BoxItemIterator(BoxAPIConnection api, URL url, long limit, long offset) {
        this(api, url, offset(offset, limit));
    }

    public boolean hasNext() {
        return this.iterator.hasNext();
    }

    public BoxItem.Info next() {
        JsonObject nextJSONObject = this.iterator.next();
        String type = nextJSONObject.get("type").asString();
        String id = nextJSONObject.get("id").asString();

        BoxItem.Info nextItemInfo;
        if (type.equals("folder")) {
            BoxFolder folder = new BoxFolder(this.api, id);
            nextItemInfo = folder.new Info(nextJSONObject);
        } else if (type.equals("file")) {
            BoxFile file = new BoxFile(this.api, id);
            nextItemInfo = file.new Info(nextJSONObject);
        } else if (type.equals("web_link")) {
            BoxWebLink link = new BoxWebLink(this.api, id);
            nextItemInfo = link.new Info(nextJSONObject);
        } else {
            assert false : "Unsupported item type: " + type;
            throw new BoxAPIException("Unsupported item type: " + type);
        }

        return nextItemInfo;
    }

    public void remove() {
        throw new UnsupportedOperationException();
    }
}




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