source: VirtualCollectionRegistry/trunk/VirtualCollectionRegistry/src/main/java/de/uni_leipzig/asv/clarin/webservices/pidservices2/PidObject.java @ 5482

package de.uni_leipzig.asv.clarin.webservices.pidservices2;

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import net.sf.json.JSONArray;

import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.PathNotFoundException;

/**
 * Stores most(!) relevant information of a PID JSON object retrieved from the GWDG
 * 
 * @author Thomas Eckart
 */
public class PidObject {
        private final String handleIdentifier;
        private final Map<HandleField, String> fieldMap;

        public PidObject(String pid, JSONArray pidJsonArray) {
                this.handleIdentifier = pid;

                fieldMap = new HashMap<HandleField, String>();
                String jsonPath;
                for (HandleField fieldName : HandleField.values()) {
                        try {
                                jsonPath = "$..[?(@.type=='" + fieldName + "')].parsed_data[0]";
                                fieldMap.put(fieldName, JsonPath.read(pidJsonArray, jsonPath).toString());
                        } catch (PathNotFoundException pnfe) {
                                fieldMap.put(fieldName, null);
                        }
                }
        }

        /**
         * Returns handle identifier
         * 
         * @return handle identifier
         */
        public String getHandleIdentifier() {
                return handleIdentifier;
        }

        /**
         * Returns stored value in EPIC handle for a specific field
         * 
         * @param field
         *            name of the stored field
         * @return value of the stored field ('parsed_data'), may be null
         */
        public String getValue(HandleField fieldName) {
                return fieldMap.get(fieldName);
        }

        @Override
        public String toString() {
                StringBuilder sb = new StringBuilder(handleIdentifier);
                sb.append(" (Values: ");
                Iterator<HandleField> fieldIterator = fieldMap.keySet().iterator();
                while (fieldIterator.hasNext()) {
                        HandleField field = fieldIterator.next();
                        sb.append(" " + field + "=\"" + fieldMap.get(field) + "\"");
                }
                sb.append(")");
                return sb.toString();
        }
}