com.dropbox.client2.jsonextract.JsonExtractionException Maven / Gradle / Ivy

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The Dropbox API for Java is a Dropbox supported client library for accessing the JSON+REST interface to Dropbox. It supports OAuth proxied authentication. It is designed to be simple and easy to use, as well as instructional in case you want to write your own. It is MIT licensed.

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package com.dropbox.client2.jsonextract;

import static org.json.simple.JSONValue.toJSONString;

import java.util.List;
import java.util.Map;

public final class JsonExtractionException extends Exception {

	private static final long serialVersionUID = -5744582005002105505L;

	public JsonExtractionException(String path, String message, Object value) {
        super((path == null ? "" : path + ": ") + message +
              (value == null ? "" : ": " + summarizeValue(value)));
    }

    private static String summarizeValue(Object value) {
        if (value instanceof java.util.Map) {
            StringBuilder buf = new StringBuilder();
            @SuppressWarnings("unchecked")
            Map map = (Map) value;
            buf.append("{");
            String sep = "";
            for (Map.Entry entry : map.entrySet()) {
                buf.append(sep); sep = ", ";
                buf.append(toJSONString(entry.getKey()));
                buf.append(" = ");
                buf.append("...");
            }
            buf.append("}");
            return buf.toString();
        }
        else if (value instanceof java.util.List) {
            List list = (List) value;
            if (list.isEmpty()) {
                return "[]";
            } else if (list.size() == 1) {
                return "[" + summarizeValue(list.get(0)) + "]";
            } else {
                return "[" + summarizeValue(list.get(0)) + ", ...] (" + list.size() + " elements)";
            }
        }
        else {
            return toJSONString(value);
        }
    }
}