Code coverage report for src/Common/Schema/Mixins/SchemaExecution.js

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"use strict";
 
var _                       = require("lodash"),
    Safe                    = require("../../Safe"),
    Type                    = require("../../Type"),
    Assert                  = require("../../Assert"),
    Exception               = require("../../Exception/Exception"),
    Types                   = require("../Types"),
    SchemaResult            = require("../SchemaResult"),
    SchemaExecutionHelper   = require("./SchemaExecutionHelper");
 
/**
 *
 * Iterate over the complex value
 *
 * @param  {SchemaDefinition} schema
 * @param  {*} value
 *
 * @return {SchemaResult}
 *
 */
var execute = function(schema, value, validationFns){
 
    /* jshint -W064 */
    var result = SchemaResult(schema, value);
 
    /// get the value from the schema
    try {
        value = SchemaExecutionHelper.prepareValue(schema, value, validationFns);
        result.setValue(value);
    }
    catch(e){
        result.addError(e);
        return result;
    }
 
    /// if value is null there's no need to iterate
    /* jshint -W041 */
    if(value == null){
        return result;
    }
 
    /// if is expecting any value return it straight away
    if(schema.any){
        return result;
    }
 
    /// if is not a complex value return the value
    if(!schema.isArray() && !schema.isObject()){
        return result;
    }
 
    /// prepare the schema for execution against the value. This will expand
    /// the schema to match the value
    try {
        schema = SchemaExecutionHelper.prepareSchema(schema, value, validationFns);
    }
    catch(e){
        result.addError(e);
        return result;
    }
 
    /// reset the result value before iterating
    result = SchemaResult(schema, schema.isObject() ? {} : []);
 
    /// recursion over the inner values of the schema
    _.each(schema.schema, function(innerSchema, key){
 
        /// recursive execute the schema
        var innerResult = innerSchema.execute(value[key], validationFns);
 
        /// add result to errors
        if(!innerResult.isValid()){
            result.addError(innerResult.getErrors());
            return;
        }
 
        /// get the inner result value
        var innerValue = innerResult.getValue();
 
        /// if is an object and value is not required ignore!
        if(schema.isObject() && innerValue == null && !innerSchema.required){
            return;
        }
 
        /// set the value
        result.setValue(innerValue, { index: key });
 
    });
 
    return result;
 
};
 
/**
 *
 * Schema execution methods.
 *
 * @type {Object}
 *
 */
var Execution = function(){
 
    /**
     *
     * Execute Schema against the value. This will perform a top-down recursion on
     * the given structure.
     *
     * @param {SchemaDefinition} schema
     * @param {*} value
     * @param {Object} options
     *
     * @return {SchemaResult}
     *
     */
    this.execute = function(value, validationFns){
 
        /// validate and normalize arguments
        Assert.instanceOf(Types.SchemaDefinition)
            .assert(this);
 
        /// if it has no errors iterate over the object
        var result = execute(this, value, validationFns);
 
        /// if there's error try to recover by applying the default value
        if(!result.isValid()){
 
            /// try to fallback to the default value if it can
            /* jshint -W041 */
            if(this.default != null){
 
                var dresult = execute(this, this.default, validationFns);
 
                /// if default value is valid use it, otherwise use the given
                /// value
                Eif(dresult.isValid()){
                    result = dresult;
                }
 
            }
 
        }
 
        return result;
 
    };
 
};
 
module.exports = Execution;