jsonpath-wasm publish

2025-07-31 23:32:02 +00:00 · 2019-04-13 22:27:33 +09:00
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+# jsonpath-wasm
+
+[![Build Status](https://travis-ci.org/freestrings/jsonpath.svg?branch=master)](https://travis-ci.org/freestrings/jsonpath)
+
+It is Webassembly version of [jsonpath_lib](https://github.com/freestrings/jsonpath) that is [JsonPath](https://goessner.net/articles/JsonPath/) engine written in Rust. 
+
+## APIs
+
+* [jsonpath.Selector](#jsonpathselector)
+* [jsonpath.select(json: string|object, jsonpath: string)](#json-stringobject-jsonpath-string)
+* [jsonpath.compile(jsonpath: string)](#compilejsonpath-string)
+* [jsonpath.selector(json: string|object)](#selectorjson-stringobject)
+* [Other Examples](https://github.com/freestrings/jsonpath/wiki/Javascript-examples)
+
+### jsonpath.Selector
+
+```javascript
+let jsonObj = {
+    "school": {
+        "friends": [
+            {"name": "친구1", "age": 20},
+            {"name": "친구2", "age": 20}
+        ]
+    },
+    "friends": [
+        {"name": "친구3", "age": 30},
+        {"name": "친구4"}
+    ]
+};
+
+let selector = new jsonpath.Selector().value(jsonObj);
+
+{
+    let jsonObj = selector.path('$..[?(@.age >= 30)]').selectTo();
+    let resultObj = [{"name": "친구3", "age": 30}];
+    console.log(JSON.stringify(jsonObj) === JSON.stringify(resultObj));
+}
+
+{
+    let jsonObj = selector.path('$..[?(@.age == 20)]').selectTo();
+    let resultObj = [{"name": "친구1", "age": 20}, {"name": "친구2", "age": 20}];
+    console.log(JSON.stringify(jsonObj) === JSON.stringify(resultObj));
+}
+
+{
+    let jsonObj = selector.value({"friends": [ {"name": "친구5", "age": 20} ]}).selectTo();
+    let resultObj = [{"name": "친구5", "age": 20}];
+    console.log(JSON.stringify(jsonObj) === JSON.stringify(resultObj));
+}
+```
+
+### jsonpath.select(json: string|object, jsonpath: string)
+
+```javascript
+let jsonObj = {
+    "school": {
+        "friends": [
+            {"name": "친구1", "age": 20},
+            {"name": "친구2", "age": 20}
+        ]
+    },
+    "friends": [
+        {"name": "친구3", "age": 30},
+        {"name": "친구4"}
+    ]
+};
+
+let ret = [
+    {"name": "친구3", "age": 30},
+    {"name": "친구1", "age": 20}
+];
+
+
+let selectAsString = jsonpath.select(JSON.stringify(jsonObj), '$..friends[0]');
+let selectAsObj = jsonpath.select(jsonObj, '$..friends[0]');
+
+console.log(
+    JSON.stringify(ret) == JSON.stringify(selectAsString),
+    JSON.stringify(ret) == JSON.stringify(selectAsObj)
+);
+
+// => true, true
+```
+
+### jsonpath.compile(jsonpath: string)
+
+```javascript
+let template = jsonpath.compile('$..friends[0]');
+
+let jsonObj = {
+    "school": {
+        "friends": [
+            {"name": "친구1", "age": 20},
+            {"name": "친구2", "age": 20}
+        ]
+    },
+    "friends": [
+        {"name": "친구3", "age": 30},
+        {"name": "친구4"}
+    ]
+};
+
+let ret = [
+    {"name": "친구3", "age": 30},
+    {"name": "친구1", "age": 20}
+];
+
+let selectAsString = template(JSON.stringify(jsonObj));
+let selectAsObj = template(jsonObj);
+
+console.log(
+    JSON.stringify(ret) == JSON.stringify(selectAsString),
+    JSON.stringify(ret) == JSON.stringify(selectAsObj)
+);
+
+// => true, true
+
+let jsonObj2 = {
+    "school": {
+        "friends": [
+            {"name": "Millicent Norman"},
+            {"name": "Vincent Cannon"}
+        ]
+    },
+    "friends": [ {"age": 30}, {"age": 40} ]
+};
+
+let ret2 = [
+    {"age": 30},
+    {"name": "Millicent Norman"}
+];
+
+let selectAsString2 = template(JSON.stringify(jsonObj2));
+let selectAsObj2 = template(jsonObj2);
+
+console.log(
+        JSON.stringify(ret2) == JSON.stringify(selectAsString2),
+        JSON.stringify(ret2) == JSON.stringify(selectAsObj2)
+);
+
+// => true, true
+```
+
+### jsonpath.selector(json: string|object)
+
+```javascript
+let jsonObj = {
+    "school": {
+        "friends": [
+            {"name": "친구1", "age": 20},
+            {"name": "친구2", "age": 20}
+        ]
+    },
+    "friends": [
+        {"name": "친구3", "age": 30},
+        {"name": "친구4"}
+    ]
+};
+
+let ret1 = [
+    {"name": "친구3", "age": 30},
+    {"name": "친구1", "age": 20}
+];
+
+let ret2 = [
+    {"name": "친구4"},
+    {"name": "친구2", "age": 20}
+];
+
+let selector = jsonpath.selector(jsonObj);
+// or as json string 
+// let selector = jsonpath.selector(JSON.stringify(jsonObj));
+
+let select1 = selector('$..friends[0]');
+let select2 = selector('$..friends[1]');
+
+console.log(
+    JSON.stringify(ret1) == JSON.stringify(select1),
+    JSON.stringify(ret2) == JSON.stringify(select2)
+);
+
+// => true, true
+```