"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var tslib_1 = require("tslib");
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var EntityMetadata_1 = require("./EntityMetadata");
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/**
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* Contains all information about some entity's relation.
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*/
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var RelationMetadata = /** @class */ (function () {
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// ---------------------------------------------------------------------
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// Constructor
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// ---------------------------------------------------------------------
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function RelationMetadata(options) {
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/**
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* Indicates if this is a parent (can be only many-to-one relation) relation in the tree tables.
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*/
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this.isTreeParent = false;
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/**
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* Indicates if this is a children (can be only one-to-many relation) relation in the tree tables.
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*/
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this.isTreeChildren = false;
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/**
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* Indicates if this relation's column is a primary key.
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* Can be used only for many-to-one and owner one-to-one relations.
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*/
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this.isPrimary = false;
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/**
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* Indicates if this relation is lazily loaded.
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*/
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this.isLazy = false;
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/**
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* Indicates if this relation is eagerly loaded.
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*/
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this.isEager = false;
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/**
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* Indicates if persistence is enabled for the relation.
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* By default its enabled, but if you want to avoid any changes in the relation to be reflected in the database you can disable it.
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* If its disabled you can only change a relation from inverse side of a relation or using relation query builder functionality.
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* This is useful for performance optimization since its disabling avoid multiple extra queries during entity save.
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*/
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this.persistenceEnabled = true;
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/**
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* If set to true then related objects are allowed to be inserted to the database.
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*/
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this.isCascadeInsert = false;
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/**
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* If set to true then related objects are allowed to be updated in the database.
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*/
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this.isCascadeUpdate = false;
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/**
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* If set to true then related objects are allowed to be remove from the database.
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*/
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this.isCascadeRemove = false;
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/**
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* Indicates if relation column value can be nullable or not.
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*/
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this.isNullable = true;
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/**
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* Indicates if this side is an owner of this relation.
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*/
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this.isOwning = false;
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/**
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* Checks if this relation's type is "one-to-one".
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*/
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this.isOneToOne = false;
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/**
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* Checks if this relation is owner side of the "one-to-one" relation.
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* Owner side means this side of relation has a join column in the table.
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*/
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this.isOneToOneOwner = false;
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/**
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* Checks if this relation has a join column (e.g. is it many-to-one or one-to-one owner side).
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*/
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this.isWithJoinColumn = false;
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/**
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* Checks if this relation is NOT owner side of the "one-to-one" relation.
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* NOT owner side means this side of relation does not have a join column in the table.
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*/
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this.isOneToOneNotOwner = false;
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/**
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* Checks if this relation's type is "one-to-many".
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*/
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this.isOneToMany = false;
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/**
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* Checks if this relation's type is "many-to-one".
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*/
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this.isManyToOne = false;
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/**
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* Checks if this relation's type is "many-to-many".
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*/
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this.isManyToMany = false;
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/**
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* Checks if this relation's type is "many-to-many", and is owner side of the relationship.
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* Owner side means this side of relation has a join table.
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*/
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this.isManyToManyOwner = false;
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/**
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* Checks if this relation's type is "many-to-many", and is NOT owner side of the relationship.
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* Not owner side means this side of relation does not have a join table.
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*/
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this.isManyToManyNotOwner = false;
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/**
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* Foreign keys created for this relation.
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*/
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this.foreignKeys = [];
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/**
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* Join table columns.
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* Join columns can be obtained only from owner side of the relation.
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* From non-owner side of the relation join columns will be empty.
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* If this relation is a many-to-one/one-to-one then it takes join columns from the current entity.
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* If this relation is many-to-many then it takes all owner join columns from the junction entity.
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*/
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this.joinColumns = [];
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/**
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* Inverse join table columns.
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* Inverse join columns are supported only for many-to-many relations
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* and can be obtained only from owner side of the relation.
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* From non-owner side of the relation join columns will be undefined.
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*/
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this.inverseJoinColumns = [];
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this.entityMetadata = options.entityMetadata;
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this.embeddedMetadata = options.embeddedMetadata;
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var args = options.args;
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this.target = args.target;
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this.propertyName = args.propertyName;
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this.relationType = args.relationType;
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if (args.inverseSideProperty)
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this.givenInverseSidePropertyFactory = args.inverseSideProperty;
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this.isLazy = args.isLazy || false;
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this.isCascadeInsert = args.options.cascade === true || (args.options.cascade instanceof Array && args.options.cascade.indexOf("insert") !== -1);
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this.isCascadeUpdate = args.options.cascade === true || (args.options.cascade instanceof Array && args.options.cascade.indexOf("update") !== -1);
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this.isCascadeRemove = args.options.cascade === true || (args.options.cascade instanceof Array && args.options.cascade.indexOf("remove") !== -1);
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this.isPrimary = args.options.primary || false;
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this.isNullable = args.options.nullable === false || this.isPrimary ? false : true;
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this.onDelete = args.options.onDelete;
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this.onUpdate = args.options.onUpdate;
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this.deferrable = args.options.deferrable;
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this.isEager = args.options.eager || false;
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this.persistenceEnabled = args.options.persistence === false ? false : true;
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this.isTreeParent = args.isTreeParent || false;
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this.isTreeChildren = args.isTreeChildren || false;
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this.type = args.type instanceof Function ? args.type() : args.type;
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this.isOneToOne = this.relationType === "one-to-one";
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this.isOneToMany = this.relationType === "one-to-many";
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this.isManyToOne = this.relationType === "many-to-one";
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this.isManyToMany = this.relationType === "many-to-many";
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this.isOneToOneNotOwner = this.isOneToOne ? true : false;
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this.isManyToManyNotOwner = this.isManyToMany ? true : false;
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}
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// ---------------------------------------------------------------------
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// Public Methods
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// ---------------------------------------------------------------------
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/**
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* Creates join column ids map from the given related entity ids array.
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*/
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RelationMetadata.prototype.getRelationIdMap = function (entity) {
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var joinColumns = this.isOwning ? this.joinColumns : this.inverseRelation.joinColumns;
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var referencedColumns = joinColumns.map(function (joinColumn) { return joinColumn.referencedColumn; });
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// console.log("entity", entity);
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// console.log("referencedColumns", referencedColumns);
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return EntityMetadata_1.EntityMetadata.getValueMap(entity, referencedColumns);
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};
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/**
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* Ensures that given object is an entity id map.
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* If given id is an object then it means its already id map.
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* If given id isn't an object then it means its a value of the id column
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* and it creates a new id map with this value and name of the primary column.
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*/
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RelationMetadata.prototype.ensureRelationIdMap = function (id) {
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if (id instanceof Object)
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return id;
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var joinColumns = this.isOwning ? this.joinColumns : this.inverseRelation.joinColumns;
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var referencedColumns = joinColumns.map(function (joinColumn) { return joinColumn.referencedColumn; });
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if (referencedColumns.length > 1)
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throw new Error("Cannot create relation id map for a single value because relation contains multiple referenced columns.");
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return referencedColumns[0].createValueMap(id);
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};
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/**
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* Extracts column value from the given entity.
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* If column is in embedded (or recursive embedded) it extracts its value from there.
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*/
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RelationMetadata.prototype.getEntityValue = function (entity, getLazyRelationsPromiseValue) {
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if (getLazyRelationsPromiseValue === void 0) { getLazyRelationsPromiseValue = false; }
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if (entity === null || entity === undefined)
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return undefined;
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// extract column value from embeddeds of entity if column is in embedded
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if (this.embeddedMetadata) {
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// example: post[data][information][counters].id where "data", "information" and "counters" are embeddeds
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// we need to get value of "id" column from the post real entity object
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// first step - we extract all parent properties of the entity relative to this column, e.g. [data, information, counters]
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var propertyNames = tslib_1.__spread(this.embeddedMetadata.parentPropertyNames);
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// next we need to access post[data][information][counters][this.propertyName] to get column value from the counters
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// this recursive function takes array of generated property names and gets the post[data][information][counters] embed
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var extractEmbeddedColumnValue_1 = function (propertyNames, value) {
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var propertyName = propertyNames.shift();
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if (propertyName) {
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if (value[propertyName]) {
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return extractEmbeddedColumnValue_1(propertyNames, value[propertyName]);
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}
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return undefined;
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}
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return value;
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};
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// once we get nested embed object we get its column, e.g. post[data][information][counters][this.propertyName]
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var embeddedObject = extractEmbeddedColumnValue_1(propertyNames, entity);
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if (this.isLazy) {
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if (embeddedObject["__" + this.propertyName + "__"] !== undefined)
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return embeddedObject["__" + this.propertyName + "__"];
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if (getLazyRelationsPromiseValue === true)
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return embeddedObject[this.propertyName];
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return undefined;
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}
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return embeddedObject ? embeddedObject[this.isLazy ? "__" + this.propertyName + "__" : this.propertyName] : undefined;
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}
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else { // no embeds - no problems. Simply return column name by property name of the entity
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if (this.isLazy) {
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if (entity["__" + this.propertyName + "__"] !== undefined)
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return entity["__" + this.propertyName + "__"];
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if (getLazyRelationsPromiseValue === true)
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return entity[this.propertyName];
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return undefined;
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}
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return entity[this.propertyName];
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}
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};
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/**
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* Sets given entity's relation's value.
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* Using of this method helps to set entity relation's value of the lazy and non-lazy relations.
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*
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* If merge is set to true, it merges given value into currently
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*/
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RelationMetadata.prototype.setEntityValue = function (entity, value) {
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var propertyName = this.isLazy ? "__" + this.propertyName + "__" : this.propertyName;
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if (this.embeddedMetadata) {
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// first step - we extract all parent properties of the entity relative to this column, e.g. [data, information, counters]
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var extractEmbeddedColumnValue_2 = function (embeddedMetadatas, map) {
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// if (!object[embeddedMetadata.propertyName])
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// object[embeddedMetadata.propertyName] = embeddedMetadata.create();
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var embeddedMetadata = embeddedMetadatas.shift();
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if (embeddedMetadata) {
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if (!map[embeddedMetadata.propertyName])
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map[embeddedMetadata.propertyName] = embeddedMetadata.create();
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extractEmbeddedColumnValue_2(embeddedMetadatas, map[embeddedMetadata.propertyName]);
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return map;
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}
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map[propertyName] = value;
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return map;
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};
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return extractEmbeddedColumnValue_2(tslib_1.__spread(this.embeddedMetadata.embeddedMetadataTree), entity);
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}
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else {
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entity[propertyName] = value;
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}
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};
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/**
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* Creates entity id map from the given entity ids array.
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*/
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RelationMetadata.prototype.createValueMap = function (value) {
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var _this = this;
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var _a;
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// extract column value from embeds of entity if column is in embedded
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if (this.embeddedMetadata) {
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// example: post[data][information][counters].id where "data", "information" and "counters" are embeddeds
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// we need to get value of "id" column from the post real entity object and return it in a
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// { data: { information: { counters: { id: ... } } } } format
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// first step - we extract all parent properties of the entity relative to this column, e.g. [data, information, counters]
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var propertyNames = tslib_1.__spread(this.embeddedMetadata.parentPropertyNames);
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// now need to access post[data][information][counters] to get column value from the counters
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// and on each step we need to create complex literal object, e.g. first { data },
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// then { data: { information } }, then { data: { information: { counters } } },
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// then { data: { information: { counters: [this.propertyName]: entity[data][information][counters][this.propertyName] } } }
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// this recursive function helps doing that
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var extractEmbeddedColumnValue_3 = function (propertyNames, map) {
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var propertyName = propertyNames.shift();
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if (propertyName) {
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map[propertyName] = {};
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extractEmbeddedColumnValue_3(propertyNames, map[propertyName]);
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return map;
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}
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map[_this.propertyName] = value;
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return map;
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};
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return extractEmbeddedColumnValue_3(propertyNames, {});
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}
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else { // no embeds - no problems. Simply return column property name and its value of the entity
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return _a = {}, _a[this.propertyName] = value, _a;
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}
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};
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// ---------------------------------------------------------------------
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// Builder Methods
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// ---------------------------------------------------------------------
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/**
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* Builds some depend relation metadata properties.
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* This builder method should be used only after embedded metadata tree was build.
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*/
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RelationMetadata.prototype.build = function () {
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this.propertyPath = this.buildPropertyPath();
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};
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/**
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* Registers given foreign keys in the relation.
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* This builder method should be used to register foreign key in the relation.
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*/
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RelationMetadata.prototype.registerForeignKeys = function () {
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var foreignKeys = [];
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for (var _i = 0; _i < arguments.length; _i++) {
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foreignKeys[_i] = arguments[_i];
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}
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var _a;
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(_a = this.foreignKeys).push.apply(_a, tslib_1.__spread(foreignKeys));
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this.joinColumns = this.foreignKeys[0] ? this.foreignKeys[0].columns : [];
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this.inverseJoinColumns = this.foreignKeys[1] ? this.foreignKeys[1].columns : [];
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this.isOwning = this.isManyToOne || ((this.isManyToMany || this.isOneToOne) && this.joinColumns.length > 0);
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this.isOneToOneOwner = this.isOneToOne && this.isOwning;
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this.isOneToOneNotOwner = this.isOneToOne && !this.isOwning;
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this.isManyToManyOwner = this.isManyToMany && this.isOwning;
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this.isManyToManyNotOwner = this.isManyToMany && !this.isOwning;
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this.isWithJoinColumn = this.isManyToOne || this.isOneToOneOwner;
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};
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/**
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* Registers a given junction entity metadata.
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* This builder method can be called after junction entity metadata for the many-to-many relation was created.
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*/
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RelationMetadata.prototype.registerJunctionEntityMetadata = function (junctionEntityMetadata) {
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this.junctionEntityMetadata = junctionEntityMetadata;
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this.joinTableName = junctionEntityMetadata.tableName;
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if (this.inverseRelation) {
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this.inverseRelation.junctionEntityMetadata = junctionEntityMetadata;
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this.joinTableName = junctionEntityMetadata.tableName;
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}
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};
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/**
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* Builds inverse side property path based on given inverse side property factory.
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* This builder method should be used only after properties map of the inverse entity metadata was build.
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*/
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RelationMetadata.prototype.buildInverseSidePropertyPath = function () {
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if (this.givenInverseSidePropertyFactory) {
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var ownerEntityPropertiesMap = this.inverseEntityMetadata.propertiesMap;
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if (typeof this.givenInverseSidePropertyFactory === "function")
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return this.givenInverseSidePropertyFactory(ownerEntityPropertiesMap);
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if (typeof this.givenInverseSidePropertyFactory === "string")
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return this.givenInverseSidePropertyFactory;
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}
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else if (this.isTreeParent && this.entityMetadata.treeChildrenRelation) {
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return this.entityMetadata.treeChildrenRelation.propertyName;
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}
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else if (this.isTreeChildren && this.entityMetadata.treeParentRelation) {
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return this.entityMetadata.treeParentRelation.propertyName;
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}
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return "";
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};
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/**
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* Builds relation's property path based on its embedded tree.
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*/
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RelationMetadata.prototype.buildPropertyPath = function () {
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if (!this.embeddedMetadata || !this.embeddedMetadata.parentPropertyNames.length)
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return this.propertyName;
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return this.embeddedMetadata.parentPropertyNames.join(".") + "." + this.propertyName;
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};
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return RelationMetadata;
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}());
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exports.RelationMetadata = RelationMetadata;
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//# sourceMappingURL=RelationMetadata.js.map
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