Examples with JsonPathParser org.folio.rest.tools.parser.JsonPathParser used on opensource projects

Example 6 with JsonPathParser

use of org.folio.rest.tools.parser.JsonPathParser in project raml-module-builder by folio-org.

the class Response method mapFrom.

/**
 * pull a specific field / section from response1 and populate this response with that section
 * @param response1
 * @param extractField
 * @param intoField
 * @param allowNulls
 * @return
 */
public Response mapFrom(Response response1, String extractField, String intoField, String nameOfInsert, boolean allowNulls) throws ResponseNullPointer {
    if (response1 == null || response1.body == null) {
        throw new ResponseNullPointer();
    }
    if (this.body == null) {
        this.body = new JsonObject();
    }
    JsonPathParser jpp = new JsonPathParser(response1.body);
    // get list of paths within the json to join on
    List<StringBuilder> sbList = jpp.getAbsolutePaths(extractField);
    if (sbList == null) {
        // path does not exist in the json, nothing to join on, return response
        return this;
    }
    JsonPathParser result = new JsonPathParser(this.body);
    int size = sbList.size();
    boolean isArray = false;
    if (extractField.contains("[*]")) {
        // probably the contains is enough and no need to check size
        isArray = true;
    }
    JsonObject ret = new JsonObject();
    for (int i = 0; i < size; i++) {
        Object val = jpp.getValueAt(sbList.get(i));
        if (val == null && !allowNulls) {
            continue;
        }
        String fixedPath = intoField;
        if (isArray) {
            fixedPath = fixedPath + "[" + i + "]";
        }
        result.setValueAt(fixedPath, val, nameOfInsert);
    }
    return this;
}

Example 7 with JsonPathParser

use of org.folio.rest.tools.parser.JsonPathParser in project raml-module-builder by folio-org.

the class Response method joinOn.

/**
 * join this response with response parameter using the withField field name on the current
 * response and the onField field from the response passed in as a parameter (Basically, merge
 * entries from the two responses when the values of the withField and onField match.
 * Replace the withField in the current response
 * with the value found in the insertField (from the Response parameter)
 * @param withField
 * @param response
 * @param onField
 * @param extractField - the field to extract from the response to join on. Two options:
 * 1. an absolute path - such as a.b.c or a.b.c.d[0] - should be used when one field needs to be
 * extracted
 * 2. a relative path - such as ../../abc - should be used in cases where the join on is an array
 * of results, and we want to extract the specific field for each item in the array to push into the
 * response we are joining with.
 * @param intoField - the field in the current Response's json to merge into
 * @param allowNulls
 * @return
 * @throws ResponseNullPointer
 */
public Response joinOn(Response response1, String withField, Response response2, String onField, String extractField, String intoField, boolean allowNulls) throws ResponseNullPointer {
    if ((this.body == null && response1 == null) || response2 == null || response2.body == null) {
        throw new ResponseNullPointer();
    }
    JsonPathParser output = null;
    JsonObject input = null;
    if (response1 != null && response1.body != null) {
        input = response1.body;
        if (this.body == null) {
            this.body = new JsonObject();
        }
        output = new JsonPathParser(this.body);
    } else {
        input = this.body;
    }
    JsonPathParser jpp = new JsonPathParser(response2.body);
    // get list of paths within the json to join on
    List<StringBuilder> sbList = jpp.getAbsolutePaths(onField);
    if (sbList == null) {
        // path does not exist in the json, nothing to join on, return response
        return this;
    }
    Multimap<Object, ArrayList<Object>> joinTable = ArrayListMultimap.create();
    // Map<Object, Object> joinTable = new HashMap<>();
    int size = sbList.size();
    for (int i = 0; i < size; i++) {
        Pairs map = jpp.getValueAndParentPair(sbList.get(i));
        if (map != null && map.getRequestedValue() != null) {
            ArrayList<Object> a = new ArrayList<>();
            a.add(sbList.get(i));
            a.add(map.getRootNode());
            joinTable.put(map.getRequestedValue(), a);
        }
    }
    jpp = new JsonPathParser(input);
    List<StringBuilder> list = jpp.getAbsolutePaths(withField);
    int size2 = 0;
    if (list != null) {
        // if withField path does not exist in json the list will be null
        size2 = list.size();
    }
    for (int i = 0; i < size2; i++) {
        // get object for each requested absolute path (withField) needed to compare with the
        // join table values
        Object valueAtPath = jpp.getValueAt(list.get(i).toString());
        // check if the value at the requested path also exists in the join table.
        // if so, get the corresponding object from the join table that will replace a value
        // in the current json
        Collection<ArrayList<Object>> o = joinTable.get(valueAtPath);
        if (o != null && o.size() > 0) {
            // there is a match between the two jsons, can either be a single match or a match to multiple
            // matches
            Object toInsert = null;
            int arrayPlacement = 0;
            // this can be the entire object, or a value found at a path within the object aka insertField
            if (o.size() == 1 && extractField != null) {
                String tempEField = extractField;
                ArrayList<Object> b = o.iterator().next();
                if (extractField.contains("../")) {
                    tempEField = backTrack(b.get(0).toString(), extractField);
                }
                toInsert = new JsonPathParser((JsonObject) b.get(1)).getValueAt(tempEField);
            } else if (o.size() > 1 && extractField != null) {
                // more then one of the same value mapped to different objects, create a jsonarray
                // with all the values and insert the jsonarray
                toInsert = new JsonArray();
                Iterator<?> it = o.iterator();
                while (it.hasNext()) {
                    String tempEField = extractField;
                    ArrayList<Object> b = (ArrayList) it.next();
                    if (extractField.contains("../")) {
                        tempEField = backTrack(b.get(0).toString(), extractField);
                    }
                    Object object = new JsonPathParser((JsonObject) b.get(1)).getValueAt(tempEField);
                    if (object != null) {
                        ((JsonArray) toInsert).add(object);
                    }
                }
            } else {
                toInsert = o.iterator().next();
            }
            if (!allowNulls && toInsert == null) {
                continue;
            }
            if (intoField != null) {
                // get the path in the json to replace with the value from the join table
                Object into = null;
                String tempIntoField = intoField;
                if (output != null) {
                    Pairs p = output.getValueAndParentPair(list.get(i));
                    if (p != null) {
                        // there is an existing value in this jsons path
                        into = p.getRootNode();
                    } else {
                        output.setValueAt(tempIntoField, toInsert);
                    }
                } else {
                    into = jpp.getValueAndParentPair(list.get(i)).getRootNode();
                }
                if (intoField.contains("../")) {
                    tempIntoField = backTrack(list.get(i).toString(), intoField);
                }
                JsonPathParser jpp2 = new JsonPathParser((JsonObject) into);
                Object placeWhereReplacementShouldHappen = jpp2.getValueAt(tempIntoField);
                if (placeWhereReplacementShouldHappen instanceof JsonArray) {
                    ((JsonArray) placeWhereReplacementShouldHappen).add(toInsert);
                } else {
                    if (output != null) {
                        output.setValueAt(tempIntoField, toInsert);
                    } else {
                        jpp2.setValueAt(tempIntoField, toInsert);
                    }
                }
            } else {
                if (output != null) {
                    // update new json
                    output.setValueAt(list.get(i).toString(), toInsert);
                } else {
                    // update this.body
                    jpp.setValueAt(list.get(i).toString(), toInsert);
                }
            }
        } else {
            if (allowNulls) {
                if (intoField != null) {
                    String tempIntoField = intoField;
                    if (intoField.contains("../")) {
                        tempIntoField = backTrack(list.get(i).toString(), intoField);
                    }
                    jpp.setValueAt(tempIntoField, null);
                } else {
                    jpp.setValueAt(list.get(i).toString(), null);
                }
            }
        }
    }
    if (output != null) {
        Response r = new Response();
        r.setBody(output.getJsonObject());
        return r;
    }
    return this;
}