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const EdmxModel = require("./EdmxModel");
/**
* Some api functions have (namespace, name) parameters, but allows to enter just namespace which is treated as name then.
*
* @param {String} [namespace] namespace or name, if name not set
* @param {String} [name] name or undefined
* @returns {Object} object with real name and namespace properties
*/
function fromMaybeNameOrNamespace(namespace, name) {
let realName = name ? name : namespace;
let realNamespace = name ? namespace : undefined;
if (!realName) {
throw new Error("Missing name parameter");
}
return {
name: realName,
namespace: realNamespace,
fullName: [realNamespace, realName].filter(Boolean).join("."),
};
}
/**
* Implements helpers to get metadata informations
*
* <h3>Overview</h3>
*
* <h3>Properties</h3>
*
* <ul>
* <li>raw - metadata in JSON format passed as parameter to constructor
* <li>model - metadata model constructed from raw metadata
* </ul>
*
* @class Metadata
*/
class Metadata {
/**
* Creates an instance of <code>lib/Metadata</code> class.
* @param {Object[]} [rawMetadata] list of metadata content fetched from the service in JSON format from xml2js
* @param {Object} [settings] settings for the metadata
* @memberof Metadata
*/
constructor(rawMetadata, settings) {
let model = rawMetadata
.map((r) => new EdmxModel(r, settings))
.sort((a, b) => !!b.EntityContainer - !!a.EntityContainer)
.reduce((acc, val) => acc.merge(val));
model.applySchemaExtensions(settings);
Object.defineProperty(this, "raw", {
get: () => rawMetadata,
});
Object.defineProperty(this, "model", {
get: () => model,
});
}
listEntitySetNames(namespace) {
return this.model
.getSchema(namespace)
.getEntityContainer()
.entitySets.map((s) => s.name);
}
/**
* Create list of FunctionImport names
*
* @param {String} [namespace] is used to specify service namespace which contains EntitySets
*
* @returns {[String]} returns list of FunctionImport names
*
* @memberof Metadata
*/
listFunctionImportNames(namespace) {
return this.model
.getSchema(namespace)
.getEntityContainer()
.functionImports.map((fi) => fi.name);
}
/**
* Create structure for EntitySet definition. All keys has to be defined
* and has to be generated by by engine.
*
* @param {String} [namespace] namespace or name, if name not set
* @param {String} [name] name or undefined
*
* @returns {Object} returns structure which define entity set posibilities
*
* @example
* {
* "Name": "C_AllocationCycleTP",
* "EntityType": "FCO_MANAGE_ALLOCATION_SRV.C_AllocationCycleTPType",
* "Creatable": true,
* "Updatable": true,
* "Deletable": true,
* "Pageable": true,
* "Addressable": true,
* "Countable": true,
* "Searchable": false
* }
*
* @memberof Metadata
*/
getEntitySet(namespace, name) {
// the api should have different order of parameters, I think it should be obsoleted once there is alternative (probably in CsdlSchema)
let target = fromMaybeNameOrNamespace(namespace, name);
return this.model
.getSchema(target.namespace)
.getEntityContainer()
.getEntitySet(target.name)
.getLegacyApiObject();
}
/**
* Get definition of the FunctionImport based on the metadata
*
* @param {String} [namespace] namespace or name, if name not set
* @param {String} [name] name or undefined
*
* @returns {Object} returns structure which define FunctionImport properties and posibilities
* @example
* //Structure created by the getFunctionImport
*{
* "Name": "CopyAllocationSegment",
* "ReturnType" : "Edm.Boolean",
* "HttpMethod": "POST",
* "Parameter": [{
* "Name": "DraftUUID",
* "Type": "Edm.Guid",
* "Mode": "In"
* },
* {
* "Name": "AllocationSegment",
* "Type": "Edm.String",
* "Mode": "In"
* },
* {
* "Name": "AllocationStartDate",
* "Type": "Edm.DateTime",
* "Mode": "In",
* "Precision": "0"
* },
* {
* "Name": "AllocationCycle",
* "Type": "Edm.String",
* "Mode": "In"
* },
* {
* "Name": "AllocationType",
* "Type": "Edm.String",
* "Mode": "In"
* }
* ]
*}
* @memberof Metadata
*/
getFunctionImport(namespace, name) {
// the api should have different order of parameters, I think it should be obsoleted once there is alternative (probably in CsdlSchema)
let target = fromMaybeNameOrNamespace(namespace, name);
return this.model
.getSchema(target.namespace)
.getEntityContainer()
.getFunctionImport(target.name)
.getLegacyApiObject();
}
/**
* Collect information about EntityType from metadata
*
* @param {String} [namespace] namespace or name, if name not set
* @param {String} [name] name or undefined
*
* @returns {Object} returns structure which define EntityType structure
*
* @memberof Metadata
*/
getEntityType(namespace, name) {
// the api should have different order of parameters, I think it should be obsoleted once there is alternative (probably in CsdlSchema)
let target = fromMaybeNameOrNamespace(namespace, name);
return this.model
.getSchema(target.namespace)
.getEntityType(target.name)
.getLegacyApiObject();
}
}
module.exports = Metadata;
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