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Port of jsonata.js to Java to enable rules for JSON content
/**
* (c) Copyright 2018, 2019 IBM Corporation
* 1 New Orchard Road,
* Armonk, New York, 10504-1722
* United States
* +1 914 499 1900
* support: Nathaniel Mills [email protected]
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.api.jsonata4java;
import java.io.File;
import java.io.IOException;
import com.api.jsonata4java.expressions.EvaluateException;
import com.api.jsonata4java.expressions.EvaluateRuntimeException;
import com.api.jsonata4java.expressions.Expressions;
import com.api.jsonata4java.expressions.ParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* Expression evaluation test utility
*/
public class TesterTimeBox {
static String json = "{\n" + //
" \"Account\": {\n" + //
" \"Account Name\": \"Firefly\",\n" + //
" \"Order\": [\n" + //
" {\n" + //
" \"OrderID\": \"order103\",\n" + //
" \"Product\": [\n" + //
" {\n" + //
" \"Product Name\": \"Bowler Hat\",\n" + //
" \"ProductID\": 858383,\n" + //
" \"SKU\": \"0406654608\",\n" + //
" \"Description\": {\n" + //
" \"Colour\": \"Purple\",\n" + //
" \"Width\": 300,\n" + //
" \"Height\": 200,\n" + //
" \"Depth\": 210,\n" + //
" \"Weight\": 0.75\n" + //
" },\n" + //
" \"Price\": 34.45,\n" + //
" \"Quantity\": 2\n" + //
" },\n" + //
" {\n" + //
" \"Product Name\": \"Trilby hat\",\n" + //
" \"ProductID\": 858236,\n" + //
" \"SKU\": \"0406634348\",\n" + //
" \"Description\": {\n" + //
" \"Colour\": \"Orange\",\n" + //
" \"Width\": 300,\n" + //
" \"Height\": 200,\n" + //
" \"Depth\": 210,\n" + //
" \"Weight\": 0.6\n" + //
" },\n" + //
" \"Price\": 21.67,\n" + //
" \"Quantity\": 1\n" + //
" }\n" + //
" ]\n" + //
" },\n" + //
" {\n" + //
" \"OrderID\": \"order104\",\n" + //
" \"Product\": [\n" + //
" {\n" + //
" \"Product Name\": \"Bowler Hat\",\n" + //
" \"ProductID\": 858383,\n" + //
" \"SKU\": \"040657863\",\n" + //
" \"Description\": {\n" + //
" \"Colour\": \"Purple\",\n" + //
" \"Width\": 300,\n" + //
" \"Height\": 200,\n" + //
" \"Depth\": 210,\n" + //
" \"Weight\": 0.75\n" + //
" },\n" + //
" \"Price\": 34.45,\n" + //
" \"Quantity\": 4\n" + //
" },\n" + //
" {\n" + //
" \"ProductID\": 345664,\n" + //
" \"SKU\": \"0406654603\",\n" + //
" \"Product Name\": \"Cloak\",\n" + //
" \"Description\": {\n" + //
" \"Colour\": \"Black\",\n" + //
" \"Width\": 30,\n" + //
" \"Height\": 20,\n" + //
" \"Depth\": 210,\n" + //
" \"Weight\": 2\n" + //
" },\n" + //
" \"Price\": 107.99,\n" + //
" \"Quantity\": 1\n" + //
" }\n" + //
" ]\n" + //
" }\n" + //
" ]\n" + //
" }\n" + //
"}\n"; //
/**
* @param args a fully qualified path and filename for test JSON could be provided
*/
public static void main(String[] args) {
ObjectMapper mapper = new ObjectMapper();
JsonNode jsonObj = null;
try {
jsonObj = mapper.readTree(json);
} catch (IOException e1) {
e1.printStackTrace();
}
if (args.length > 0) {
File file = new File(args[0]);
System.out.println("Attempting to load JSON from file: " + args[0]);
try {
jsonObj = mapper.readTree(file);
} catch (JsonProcessingException e) {
System.err.println(e.getLocalizedMessage());
} catch (IOException e) {
System.err.println(e.getLocalizedMessage());
}
}
try {
System.out.println("Using json:\n" + mapper.writerWithDefaultPrettyPrinter().writeValueAsString(jsonObj));
} catch (JsonProcessingException e1) {
e1.printStackTrace();
}
int maxDepth = 100;
long timeoutMS = 5000L;
boolean checkRuntime = false;
String test = JSONataUtils.prompt("Do you wish to timebox your expressions? (Y/n):");
if (test.toUpperCase().startsWith("Y")) {
checkRuntime = true;
}
if (checkRuntime) {
while (true) {
test = JSONataUtils.prompt("Enter the maximum call depth ("+maxDepth+"):");
try {
int val = new Integer(test);
if (val > 0) {
maxDepth = val;
break;
}
System.out.println("Maximum call depth must be a positive integer. Try again.");
} catch(NumberFormatException nfe) {
System.out.println("Maximum call depth must be a positive integer. Try again.");
}
}
while (true) {
test = JSONataUtils.prompt("Enter the maximum milliseconds to allow to run ("+timeoutMS+"):");
try {
long val = new Long(test);
if (val > 0L) {
timeoutMS = val;
break;
}
System.out.println("Maximum milliseconds must be a positive number. Try again.");
} catch(NumberFormatException nfe) {
System.out.println("Maximum milliseconds must be a positive number. Try again.");
}
}
}
while (true) {
String expression = JSONataUtils.prompt("Enter jsonata expression (or q to quit):");
if (expression.length() == 0 || "q".equalsIgnoreCase(expression)) {
break;
}
Expressions expr = null;
try {
expr = Expressions.parse(expression);
} catch (ParseException e) {
System.err.println(e.getLocalizedMessage());
continue;
} catch (EvaluateRuntimeException ere) {
System.err.println(ere.getLocalizedMessage());
continue;
} catch (IOException ioe) {
System.err.println(ioe.getLocalizedMessage());
}
try {
JsonNode result = null;
if (checkRuntime) {
result = expr.evaluate(jsonObj, timeoutMS, maxDepth);
} else {
result = expr.evaluate(jsonObj);
}
if (result == null) {
System.out.println("** no match **");
} else {
System.out.println("" + mapper.writerWithDefaultPrettyPrinter().writeValueAsString(result));
}
} catch (EvaluateException | JsonProcessingException e) {
System.err.println(e.getLocalizedMessage());
}
}
System.out.println("Goodbye");
}
}