Merge pull request #53 from fastcodejava/master

Modified jsonapter.js, added skip template feature.

README.md

@@ -78,6 +78,7 @@ The following are the list of all keys that have special meaning in template obj
 - [`ignoreDeep`](#ignoreDeep)
 - [`paramKey`](#paramKey)
 - [`template`](#template)
+- [`skip`](#skip)
 
 <a name="dataKey" />
 #### `dataKey` rule
@@ -283,7 +284,29 @@ var r = j2j.run(template, {
 console.log(r); // 'VALUE'
 ```
 
+<a name="skip" />
+#### `skip` rule
 
+This rule is used to skip a template.
+
+```js
+var nestedTemplate = {
+    dataKey: 'b',
+    skip: true
+};
+
+var template = {
+    template: nestedTemplate,
+    dataKey: 'a'
+};
+
+var r = j2j.run(template, {
+    a: {
+        b: 'value'
+    }
+});
+console.log(r); // null
+```
 
 
 <a name="value" />

lib/jsonapter.js

@@ -231,6 +231,9 @@ var prototype = {
         return this.runEngine(template, input, null, params);
     },
     runEngine: function (template, input, parent, params) {
+        if (template.skip === true) {
+            return null;
+        }
         if (!this.evaluateExistsWhen(template, input, params)) {
             return null;
         }

test/test-assign.js

@@ -7,6 +7,7 @@ var json2json = require('../index');
 var case_0 = require('./test_cases/case-assign-0');
 var case_1 = require('./test_cases/case-assign-1');
 var case_2 = require('./test_cases/case-assign-2');
+var case_3 = require('./test_cases/case-assign-3');
 
 var expect = chai.expect;
 
@@ -27,4 +28,10 @@ describe('assign', function () {
         var actual = engine.run(case_2.template, case_2.input);
         expect(actual).to.deep.equal(case_2.expected);
     });
+
+    it('case-assign-3: array', function () {
+        var actual = engine.run(case_3.template, case_3.input);
+        expect(actual).to.deep.equal(case_3.expected);
+    });
+
 });

test/test-examples.js

@@ -200,6 +200,44 @@ describe('examples', function () {
         expect(r2).to.equal(null);
     });
 
+    it('skip usage', function () {
+        var template = {
+            content: {
+                dest_a: {
+                    dataKey: 'a.c'
+                },
+                dest_b: {
+                    content: {
+                        dest_b0: {
+                            dataKey: 'b.c'
+                        },
+                        dest_b1: {
+                            dataKey: 'd'
+                        }
+                    },
+                    dataKey: 'a',
+                    skip: true
+                }
+            }
+        };
+
+        var input = {
+            a: {
+                b: {
+                    c: 'value_0'
+                },
+                c: 'value_2',
+                d: 'value_1'
+            }
+        };
+
+        var r = j2j.run(template, input);
+        //console.log(r); // {dest_a: 'value_2'}
+        expect(r).to.deep.equal({
+            dest_a: 'value_2'
+        });
+    });
+
     it('value - 0', function () {
         var template = {
             value: function (input) {

test/test_cases/case-assign-3.js

@@ -0,0 +1,62 @@
+"use strict";
+
+var dog = {
+    content: {
+        dogName: {
+            dataKey: 'name'
+        },
+        dogAge: {
+            value: function (input) {
+                return 2015 - input;
+            },
+            dataKey: 'birthYear'
+        }
+    },
+    skip: true,
+    dataKey: 'dog'
+};
+
+var person = {
+    content: {
+        personName: {
+            dataKey: 'name'
+        },
+        personAge: {
+            value: function (input) {
+                return 2015 - input;
+            },
+            dataKey: 'birthYear'
+        }
+    },
+    dataKey: 'person'
+};
+
+exports.template = {
+    assign: [{
+        constant: {
+            title: 'Person & Dog',
+            comment: 'dogs are good'
+        }
+    }, dog, person],
+    dataKey: 'team'
+};
+
+exports.input = {
+    team: {
+        person: {
+            name: 'DOE, JOE',
+            birthYear: 1980
+        },
+        dog: {
+            name: 'Paws',
+            birthYear: 2010
+        }
+    }
+};
+
+exports.expected = {
+    title: 'Person & Dog',
+    comment: 'dogs are good',
+    personName: 'DOE, JOE',
+    personAge: 35
+};