package org.openecomp.mso.bpmn.core.json;
import java.util.Iterator;
+import java.util.Map;
+import java.util.HashMap;
import java.util.StringTokenizer;
+import org.camunda.bpm.engine.runtime.Execution;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
/**
* Uses the JSONObject static method to convert a JSON doc to XML.
- * Note: this method will not generate valid XML if the JSONObject
+ * Note: this method may not generate valid XML if the JSONObject
* contains JSONArrays which are used to represent XML attributes
* in the JSON doc.
*
try {
JSONObject jsonObj = new JSONObject(jsonStr);
if (pretty) {
- return XmlTool.normalize(XML.toString(jsonObj));
+ // use the local class method which properly handles certain JSONArray content
+ return XmlTool.normalize(toXMLString(jsonObj, null));
} else {
- return XML.toString(jsonObj);
+// use the local class method which properly handles certain JSONArray content
+ return toXMLString(jsonObj, null);
}
} catch (Exception e){
msoLogger.debug("json2xml(): unable to parse json and convert to xml. Exception was: " + e.toString());
}
}
+ /**
+ * Uses a modified version of the org.json.XML toString() algorithm
+ * to convert a JSONObject to an XML Doc. The intent of this is to
+ * correctly generate XML from JSON including TAGs for JSONArrays
+ *
+ * @param jsonObj org.json.JSON object to be converted to XML
+ * @param tagName optional XML tagname supplied primarily during recursive calls
+ * @return String containing the XML translation
+ */
+ public static String toXMLString(Object obj, String tagName) throws JSONException {
+ StringBuffer strBuf = new StringBuffer();
+ int i;
+ JSONArray jsonArr;
+ JSONObject jsonObj;
+ String key;
+ Iterator<String> keys;
+ int len;
+ String str;
+ Object curObj;
+ if (obj instanceof JSONObject) {
+ // msoLogger.debug("toXMLString(): is a JSONObject");
+ // append "<tagName>" to the XML output
+ if (tagName != null) {
+// msoLogger.debug("toXMLString(): adding opening tagName: " + tagName);
+ strBuf.append("<");
+ strBuf.append(tagName);
+ strBuf.append(">");
+ }
+ // iterate thru the keys.
+ jsonObj = (JSONObject) obj;
+ keys = jsonObj.keys();
+ while (keys.hasNext()) {
+ key = keys.next().toString();
+ // msoLogger.debug("toXMLString(): key is " + k);
+ curObj = jsonObj.opt(key);
+ if (curObj == null) {
+ curObj = "";
+ }
+ if (curObj instanceof String) {
+ str = (String) curObj;
+ } else {
+ str = null;
+ }
+ // append the content to the XML output
+ if (key.equals("content")) {
+ if (curObj instanceof JSONArray) {
+ jsonArr = (JSONArray) curObj;
+ len = jsonArr.length();
+ for (i = 0; i < len; i += 1) {
+ if (i > 0) {
+ strBuf.append('\n');
+ }
+ strBuf.append(XML.escape(jsonArr.get(i).toString()));
+ }
+ } else {
+ strBuf.append(XML.escape(curObj.toString()));
+ }
+ // append an array of similar keys to the XML output
+ } else if (curObj instanceof JSONArray) {
+ jsonArr = (JSONArray) curObj;
+ len = jsonArr.length();
+// msoLogger.debug("toXMLString(): found JSONArray: " + key + ", size: " + len);
+ for (i = 0; i < len; i += 1) {
+ curObj = jsonArr.get(i);
+ if (curObj instanceof JSONArray) {
+// The XML tags for the nested array should be generated below when this method
+// is called recursively and the JSONArray object is passed
+// strBuf.append("<");
+// strBuf.append(key);
+// strBuf.append(">");
+ strBuf.append(toXMLString(curObj, null));
+// strBuf.append("</");
+// strBuf.append(key);
+// strBuf.append(">");
+ } else {
+// msoLogger.debug("toXMLString(): recursive call toXML() with tagName null");
+ // append the opening tag for the array (before 1st element)
+ if (i == 0) {
+ strBuf.append("<");
+ strBuf.append(key);
+ strBuf.append(">");
+ }
+ // append the opening tag for the array
+ strBuf.append(toXMLString(curObj, null));
+ // append the closing tag for the array (after last element)
+ if (i == (len - 1)) {
+ strBuf.append("</");
+ strBuf.append(key);
+ strBuf.append(">");
+ }
+ }
+ }
+ } else if (curObj.equals("")) {
+ // append a closing tag "<key>" to the XML output
+ strBuf.append("<");
+ strBuf.append(key);
+ strBuf.append("/>");
+ } else {
+// msoLogger.debug("toXMLString(): recursive call toXMLString() with tagName: " + key);
+ strBuf.append(toXMLString(curObj, key));
+ }
+ // msoLogger.debug("toXML(): partial XML: " + strBuf.toString());
+ }
+ if (tagName != null) {
+ // append the closing tag "</tagName>" to the XML output
+// msoLogger.debug("toXMLString(): adding closing tagName: " + tagName);
+ strBuf.append("</");
+ strBuf.append(tagName);
+ strBuf.append(">");
+ }
+ return strBuf.toString();
+ // XML does not have good support for arrays. If an array appears in a place
+ // where XML is lacking, synthesize an < array > element.
+ } else if (obj instanceof JSONArray) {
+ jsonArr = (JSONArray) obj;
+ len = jsonArr.length();
+ for (i = 0; i < len; ++i) {
+ curObj = jsonArr.opt(i);
+ strBuf.append(toXMLString(curObj, (tagName == null) ? "array"
+ : tagName));
+ }
+ return strBuf.toString();
+ } else {
+// msoLogger.debug("toXML(): in else block with tagName: " + tagName);
+ str = (obj == null) ? "null" : XML.escape(obj.toString());
+ return (tagName == null) ? "\"" + str + "\""
+ : (str.length() == 0) ? "<" + tagName + "/>" : "<"
+ + tagName + ">" + str + "</" + tagName + ">";
+ }
+ }
+
+ /**
+ * Formats the JSON String using the value of MSOJsonIndentFactor.
+ *
+ * @param jsonStr String containing the JSON doc
+ * @return String containing the formatted JSON doc
+ */
+ public static String prettyJson(String jsonStr) {
+// String isDebugLogEnabled = "true";
+ try {
+ JSONObject jsonObj = new JSONObject(jsonStr);
+ return jsonObj.toString(MSOJsonIndentFactor);
+ } catch (Exception e){
+ msoLogger.debug("prettyJson(): unable to parse/format json input. Exception was: " + e.toString());
+ return null;
+ }
+ }
+
/**
* Invokes json2xml(String, Boolean) defaulting to 'pretty' output.
*
public static String json2xml(String jsonStr) {
return json2xml(jsonStr, true);
}
-
+
/**
- * Uses the JSONObject static method to convert a JSON doc to XML.
+ * Returns an Iterator over the JSON keys in the specified JSON doc.
*
* @param jsonStr String containing the JSON doc
* @return Iterator over the JSON keys
+ * @throws JSONException if the doc cannot be parsed
*/
- public static Iterator <String> getJsonIterator(String jsonStr) {
-// String isDebugLogEnabled = "true";
- try {
- JSONObject json = new JSONObject(jsonStr);
- return json.keys();
-
- } catch (Exception e){
- msoLogger.debug("getJsonIterator(): unable to parse json to retrieve the keys iterator. Exception was: " + e.toString());
- return null;
+ public static Iterator <String> getJsonIterator(String jsonStr) throws JSONException {
+ return new JSONObject(jsonStr).keys();
+ }
+
+ /**
+ * Returns the name of the "root" property in the specified JSON doc. The
+ * "root" property is the single top-level property in the JSON doc. An
+ * exception is thrown if the doc is empty or if it contains more than one
+ * top-level property.
+ *
+ * @param jsonStr String containing the JSON doc
+ * @return the name of the "root" property
+ * @throws JSONException if the doc cannot be parsed, or if it is empty, or if
+ * it contains more than one top-level property
+ */
+ public static String getJsonRootProperty(String jsonStr) throws JSONException {
+ Iterator<String> iter = getJsonIterator(jsonStr);
+
+ if (!iter.hasNext()) {
+ throw new JSONException("Empty JSON object");
}
+
+ String rootPropertyName = iter.next();
+
+ if (iter.hasNext()) {
+ throw new JSONException("JSON object has more than one root property");
+ }
+
+ return rootPropertyName;
}
/**
}
return null;
}
+
+
+ /**
+ * Invokes the getJsonRawValue() method with the wrap flag set to true
+ * and returns the String equivalent of the json node object returned.
+ *
+ * @param jsonStr String containing the JSON doc
+ * @param keys full key path to the target value in the format of "key1.key2.key3..."
+ * @return String field value associated with keys
+ */
+ public static String getJsonNodeValue(String jsonStr, String keys) {
+// String isDebugLogEnabled = "true";
+ try {
+ Object rawValue = getJsonRawValue(jsonStr, keys, true);
+ if (rawValue == null) {
+ return null;
+ } else {
+ if (rawValue instanceof String) {
+ msoLogger.debug("getJsonNodeValue(): the raw value is a String Object=" + ((String) rawValue).toString());
+ return (String) rawValue;
+ } else {
+ msoLogger.debug("getJsonNodeValue(): the raw value is NOT a String Object=" + rawValue.toString());
+ return rawValue.toString();
+ }
+ }
+ } catch (Exception e) {
+ msoLogger.debug("getJsonNodeValue(): unable to parse json to retrieve node for field=" + keys + ". Exception was: " + e.toString());
+ }
+ return null;
+ }
/**
- * Invokes the getJsonRawValue() method to obtain the JSONArray associated with
- * the specified keys. The JSONArray is then walked to retrieve the content value of
- * the specified field name.
+ * Invokes the getJsonRawValue() method and returns the String equivalent of
+ * the object returned.
+ *
+ * TBD: May need separate methods for boolean, float, and integer fields if the
+ * String representation is not sufficient to meet client needs.
+ *
+ * @param jsonStr String containing the JSON doc
+ * @param keys full key path to the target value in the format of "key1.key2.key3..."
+ * @return String field value associated with keys
+ */
+ public static int getJsonIntValue(String jsonStr, String keys) {
+// String isDebugLogEnabled = "true";
+ try {
+ Object rawValue = getJsonRawValue(jsonStr, keys);
+ if (rawValue == null) {
+ return 0;
+ } else {
+ if (rawValue instanceof Integer) {
+ msoLogger.debug("getJsonValue(): the raw value is an Integer Object=" + ((String) rawValue).toString());
+ return (Integer) rawValue;
+ } else {
+ msoLogger.debug("getJsonValue(): the raw value is NOT an Integer Object=" + rawValue.toString());
+ return 0;
+ }
+ }
+ } catch (Exception e) {
+ msoLogger.debug("getJsonValue(): unable to parse json to retrieve value for field=" + keys + ". Exception was: " + e.toString());
+ }
+ return 0;
+ }
+
+ /**
+ * Invokes the getJsonParamValue() method to obtain the JSONArray associated with
+ * the specified keys. The JSONArray is then walked to retrieve the first array
+ * value associated with the specified field name (index=0).
*
* @param jsonStr String containing the JSON doc
* @param keys full key path to the target value in the format of "key1.key2.key3..."
* @return String param value associated with field name
*/
public static String getJsonParamValue(String jsonStr, String keys, String name) {
+ return getJsonParamValue(jsonStr, keys, name, 0);
+ }
+
+ /**
+ * Invokes the getJsonRawValue() method to obtain the JSONArray associated with
+ * the specified keys. The JSONArray is then walked to retrieve the nth array
+ * value associated with the specified field name and index
+ *
+ * @param jsonStr String containing the JSON doc
+ * @param keys full key path to the target value in the format of "key1.key2.key3..."
+ * @param name field name for the param to be retrieved
+ * @param index the nth param associated with name starting at 0
+ * @return String param value associated with field name
+ */
+ public static String getJsonParamValue(String jsonStr, String keys, String name, int index) {
// String isDebugLogEnabled = "true";
try {
Object rawValue = getJsonRawValue(jsonStr, keys);
} else {
if (rawValue instanceof JSONArray) {
msoLogger.debug("getJsonParamValue(): keys=" + keys + " points to JSONArray: " + ((JSONArray) rawValue).toString());
- for (int i = 0; i < ((JSONArray) rawValue).length(); i++) {
+ int arrayLen = ((JSONArray) rawValue).length();
+ if (index < 0 || arrayLen < index+1) {
+ msoLogger.debug("getJsonParamValue(): index: " + index + " is out of bounds for array size of " + arrayLen);
+ return null;
+ }
+ int foundCnt = 0;
+ for (int i = 0; i < arrayLen; i++) {
msoLogger.debug("getJsonParamValue(): index: " + i + ", value: " + ((JSONArray) rawValue).get(i).toString());
if (((JSONArray) rawValue).get(i) instanceof JSONObject) {
msoLogger.debug("getJsonParamValue(): index: " + i + " is a JSONObject");
JSONObject jsonObj = (JSONObject)((JSONArray) rawValue).get(i);
- if (jsonObj.get("name").equals(name)) {
- msoLogger.debug("getJsonParamValue(): found value: " + (String) jsonObj.get("content") + " for name: " + name);
- return (String) jsonObj.get("content");
+ String parmValue = jsonObj.get(name).toString();
+ if (parmValue != null) {
+ msoLogger.debug("getJsonParamValue(): found value: " + parmValue + " for name: " + name + " and index: " + i);
+ if (foundCnt == index) {
+ return parmValue;
+ } else {
+ foundCnt++;
+ continue;
+ }
+ } else {
+ continue;
}
} else {
msoLogger.debug("getJsonParamValue(): the JSONArray element is NOT a JSONObject=" + rawValue.toString());
return keyValue;
}
+ /**
+ * Walks the JSONObject (and sub-objects recursively), searching for the first value associated with the
+ * single key/field name specified. Returns the associated value if found or null if the key is not found
+ *
+ * @param jsonObj JSONObject representation of the the JSON doc
+ * @param key key to the target value
+ * @return String field value associated with key
+ */
+ public static Integer getJsonIntValueForKey(JSONObject jsonObj, String key) {
+// String isDebugLogEnabled = "true";
+ Integer keyValue = 0;
+ try {
+ if (jsonObj.has(key)) {
+ msoLogger.debug("getJsonValueForKey(): found value for key=" + key);
+ return ((Integer) jsonObj.get(key));
+ } else {
+ msoLogger.debug("getJsonValueForKey(): iterating over the keys");
+ Iterator <String> itr = jsonObj.keys();
+ while (itr.hasNext()) {
+ String nextKey = (String) itr.next();
+ Object obj = jsonObj.get(nextKey);
+ if (obj instanceof JSONObject) {
+ msoLogger.debug("getJsonValueForKey(): key=" + nextKey + ", points to JSONObject, recursive call");
+ keyValue = getJsonIntValueForKey((JSONObject) obj, key);
+ if (keyValue != null) {
+ msoLogger.debug("getJsonValueForKey(): found value=" + keyValue + ", for key=" + key);
+ break;
+ }
+ } else {
+ msoLogger.debug("getJsonValueForKey(): key=" + nextKey + ", does not point to a JSONObject, next key");
+ }
+ }
+ }
+ } catch (JSONException je) {
+ // JSONObject::get() throws this exception if one of the specified keys is not found
+ msoLogger.debug("getJsonValueForKey(): caught JSONException attempting to retrieve value for key=" + key);
+ keyValue = null;
+ } catch (Exception e) {
+ msoLogger.debug("getJsonValueForKey(): unable to parse json to retrieve value for field=" + key + ". Exception was: " + e.toString());
+ }
+ return keyValue;
+ }
+
/**
* Boolean method to determine if a key path is valid for the JSON doc. Invokes
* getJsonValue().
* @return Object field value associated with keys
*/
private static Object getJsonRawValue(String jsonStr, String keys) {
+ return getJsonRawValue(jsonStr, keys, false);
+ }
+
+ /**
+ * Walks the JSON doc using the full key path to retrieve the associated
+ * value. All but the last key points to the 'parent' object name(s) in order
+ * in the JSON hierarchy with the last key pointing to the target value.
+ * The value returned is a Java object.
+ *
+ * @param jsonStr String containing the JSON doc
+ * @param keys full key path to the target value in the format of "key1.key2.key3..."
+ * * @param wrap Boolean which determines if returned JSONObjects sould be "wrapped"
+ * Note: wrap does not apply to returned scalar values
+ * @return Object field value associated with keys
+ */
+ private static Object getJsonRawValue(String jsonStr, String keys, Boolean wrap) {
// String isDebugLogEnabled = "true";
String keyStr = "";
try {
return keyValue;
}
}
- // we should not hit this point: either the key points to a valid value and
- // we return it above or the key is invalid and we handle the JSONException
- // below and return null
- return null;
-
+ // return the json 'node' that the key points to
+ // note: since this is a json object and not a scalar value,
+ // use the wrap flag to determine if the object should
+ // be wrapped with a root node value
+ // (the last key in the keys String)
+ if (wrap) {
+ JSONObject wrappedJsonObj = new JSONObject();
+ wrappedJsonObj.put(keyStr, jsonObj);
+ return wrappedJsonObj.toString();
+ } else {
+ return jsonObj.toString();
+ }
+
} catch (JSONException je) {
// JSONObject::get() throws this exception if one of the specified keys is not found
msoLogger.debug("getJsonRawValue(): caught JSONException attempting to retrieve raw value for key=" + keyStr);
}
return null;
}
+
+ /**
+ * This json util method converts a json "Key" and "Value"
+ * entry Array to a Java map.
+ *
+ * @param execution
+ * @param entryArray - the json value of the entry Array
+ *
+ * @return map - a Map containing the entries
+ *
+ */
+ public Map<String, String> entryArrayToMap(Execution execution, String entryArray) {
+ msoLogger.debug("Started Entry Array To Map Util Method");
+
+ Map<String, String> map = new HashMap<String, String>();
+
+ //Populate Map
+ String entryListJson = "{ \"entry\":" + entryArray + "}";
+ JSONObject obj = new JSONObject(entryListJson);
+ JSONArray arr = obj.getJSONArray("entry");
+ for (int i = 0; i < arr.length(); i++){
+ JSONObject jo = arr.getJSONObject(i);
+ String key = jo.getString("key");
+ String value =jo.getString("value");
+ map.put(key, value);
+ }
+ msoLogger.debug("Outgoing Map is: " + map);
+ msoLogger.debug("Completed Entry Array To Map Util Method");
+ return map;
+ }
+
+
+ /**
+ * Invokes the getJsonRawValue() method to determine if the
+ * json element/variable exist. Returns true if the
+ * json element exist
+ *
+ * @param jsonStr String containing the JSON doc
+ * @param keys full key path to the target value in the format of "key1.key2.key3..."
+ * @return boolean field value associated with keys
+ */
+ public static boolean jsonElementExist(String jsonStr, String keys) {
+
+ try {
+ Object rawValue = getJsonRawValue(jsonStr, keys);
+ if (rawValue == null) {
+ return false;
+ } else {
+ return true;
+ }
+ } catch (Exception e) {
+ msoLogger.debug("jsonElementExist(): unable to determine if json element exist. Exception is: " + e.toString());
+ }
+ return true;
+ }
+
}
Code Review / so.git / blobdiff