typeorm
Version:
Data-Mapper ORM for TypeScript, ES7, ES6, ES5. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, MongoDB databases.
279 lines (277 loc) • 15 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.TreeRepository = void 0;
var tslib_1 = require("tslib");
var Repository_1 = require("./Repository");
var AbstractSqliteDriver_1 = require("../driver/sqlite-abstract/AbstractSqliteDriver");
/**
* Repository with additional functions to work with trees.
*
* @see Repository
*/
var TreeRepository = /** @class */ (function (_super) {
tslib_1.__extends(TreeRepository, _super);
function TreeRepository() {
return _super !== null && _super.apply(this, arguments) || this;
}
// -------------------------------------------------------------------------
// Public Methods
// -------------------------------------------------------------------------
/**
* Gets complete trees for all roots in the table.
*/
TreeRepository.prototype.findTrees = function () {
return tslib_1.__awaiter(this, void 0, void 0, function () {
var roots;
var _this = this;
return tslib_1.__generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, this.findRoots()];
case 1:
roots = _a.sent();
return [4 /*yield*/, Promise.all(roots.map(function (root) { return _this.findDescendantsTree(root); }))];
case 2:
_a.sent();
return [2 /*return*/, roots];
}
});
});
};
/**
* Roots are entities that have no ancestors. Finds them all.
*/
TreeRepository.prototype.findRoots = function () {
var _this = this;
var escapeAlias = function (alias) { return _this.manager.connection.driver.escape(alias); };
var escapeColumn = function (column) { return _this.manager.connection.driver.escape(column); };
var parentPropertyName = this.manager.connection.namingStrategy.joinColumnName(this.metadata.treeParentRelation.propertyName, this.metadata.primaryColumns[0].propertyName);
return this.createQueryBuilder("treeEntity")
.where(escapeAlias("treeEntity") + "." + escapeColumn(parentPropertyName) + " IS NULL")
.getMany();
};
/**
* Gets all children (descendants) of the given entity. Returns them all in a flat array.
*/
TreeRepository.prototype.findDescendants = function (entity) {
return this
.createDescendantsQueryBuilder("treeEntity", "treeClosure", entity)
.getMany();
};
/**
* Gets all children (descendants) of the given entity. Returns them in a tree - nested into each other.
*/
TreeRepository.prototype.findDescendantsTree = function (entity) {
var _this = this;
// todo: throw exception if there is no column of this relation?
return this
.createDescendantsQueryBuilder("treeEntity", "treeClosure", entity)
.getRawAndEntities()
.then(function (entitiesAndScalars) {
var relationMaps = _this.createRelationMaps("treeEntity", entitiesAndScalars.raw);
_this.buildChildrenEntityTree(entity, entitiesAndScalars.entities, relationMaps);
return entity;
});
};
/**
* Gets number of descendants of the entity.
*/
TreeRepository.prototype.countDescendants = function (entity) {
return this
.createDescendantsQueryBuilder("treeEntity", "treeClosure", entity)
.getCount();
};
/**
* Creates a query builder used to get descendants of the entities in a tree.
*/
TreeRepository.prototype.createDescendantsQueryBuilder = function (alias, closureTableAlias, entity) {
var _this = this;
// create shortcuts for better readability
var escape = function (alias) { return _this.manager.connection.driver.escape(alias); };
if (this.metadata.treeType === "closure-table") {
var joinCondition = this.metadata.closureJunctionTable.descendantColumns.map(function (column) {
return escape(closureTableAlias) + "." + escape(column.propertyPath) + " = " + escape(alias) + "." + escape(column.referencedColumn.propertyPath);
}).join(" AND ");
var parameters_1 = {};
var whereCondition = this.metadata.closureJunctionTable.ancestorColumns.map(function (column) {
parameters_1[column.referencedColumn.propertyName] = column.referencedColumn.getEntityValue(entity);
return escape(closureTableAlias) + "." + escape(column.propertyPath) + " = :" + column.referencedColumn.propertyName;
}).join(" AND ");
return this
.createQueryBuilder(alias)
.innerJoin(this.metadata.closureJunctionTable.tableName, closureTableAlias, joinCondition)
.where(whereCondition)
.setParameters(parameters_1);
}
else if (this.metadata.treeType === "nested-set") {
var whereCondition = alias + "." + this.metadata.nestedSetLeftColumn.propertyPath + " BETWEEN " +
"joined." + this.metadata.nestedSetLeftColumn.propertyPath + " AND joined." + this.metadata.nestedSetRightColumn.propertyPath;
var parameters_2 = {};
var joinCondition = this.metadata.treeParentRelation.joinColumns.map(function (joinColumn) {
var parameterName = joinColumn.referencedColumn.propertyPath.replace(".", "_");
parameters_2[parameterName] = joinColumn.referencedColumn.getEntityValue(entity);
return "joined." + joinColumn.referencedColumn.propertyPath + " = :" + parameterName;
}).join(" AND ");
return this
.createQueryBuilder(alias)
.innerJoin(this.metadata.targetName, "joined", whereCondition)
.where(joinCondition, parameters_2);
}
else if (this.metadata.treeType === "materialized-path") {
return this
.createQueryBuilder(alias)
.where(function (qb) {
var subQuery = qb.subQuery()
.select(_this.metadata.targetName + "." + _this.metadata.materializedPathColumn.propertyPath, "path")
.from(_this.metadata.target, _this.metadata.targetName)
.whereInIds(_this.metadata.getEntityIdMap(entity));
qb.setNativeParameters(subQuery.expressionMap.nativeParameters);
if (_this.manager.connection.driver instanceof AbstractSqliteDriver_1.AbstractSqliteDriver) {
return alias + "." + _this.metadata.materializedPathColumn.propertyPath + " LIKE " + subQuery.getQuery() + " || '%'";
}
else {
return alias + "." + _this.metadata.materializedPathColumn.propertyPath + " LIKE CONCAT(" + subQuery.getQuery() + ", '%')";
}
});
}
throw new Error("Supported only in tree entities");
};
/**
* Gets all parents (ancestors) of the given entity. Returns them all in a flat array.
*/
TreeRepository.prototype.findAncestors = function (entity) {
return this
.createAncestorsQueryBuilder("treeEntity", "treeClosure", entity)
.getMany();
};
/**
* Gets all parents (ancestors) of the given entity. Returns them in a tree - nested into each other.
*/
TreeRepository.prototype.findAncestorsTree = function (entity) {
var _this = this;
// todo: throw exception if there is no column of this relation?
return this
.createAncestorsQueryBuilder("treeEntity", "treeClosure", entity)
.getRawAndEntities()
.then(function (entitiesAndScalars) {
var relationMaps = _this.createRelationMaps("treeEntity", entitiesAndScalars.raw);
_this.buildParentEntityTree(entity, entitiesAndScalars.entities, relationMaps);
return entity;
});
};
/**
* Gets number of ancestors of the entity.
*/
TreeRepository.prototype.countAncestors = function (entity) {
return this
.createAncestorsQueryBuilder("treeEntity", "treeClosure", entity)
.getCount();
};
/**
* Creates a query builder used to get ancestors of the entities in the tree.
*/
TreeRepository.prototype.createAncestorsQueryBuilder = function (alias, closureTableAlias, entity) {
// create shortcuts for better readability
// const escape = (alias: string) => this.manager.connection.driver.escape(alias);
var _this = this;
if (this.metadata.treeType === "closure-table") {
var joinCondition = this.metadata.closureJunctionTable.ancestorColumns.map(function (column) {
return closureTableAlias + "." + column.propertyPath + " = " + alias + "." + column.referencedColumn.propertyPath;
}).join(" AND ");
var parameters_3 = {};
var whereCondition = this.metadata.closureJunctionTable.descendantColumns.map(function (column) {
parameters_3[column.referencedColumn.propertyName] = column.referencedColumn.getEntityValue(entity);
return closureTableAlias + "." + column.propertyPath + " = :" + column.referencedColumn.propertyName;
}).join(" AND ");
return this
.createQueryBuilder(alias)
.innerJoin(this.metadata.closureJunctionTable.tableName, closureTableAlias, joinCondition)
.where(whereCondition)
.setParameters(parameters_3);
}
else if (this.metadata.treeType === "nested-set") {
var joinCondition = "joined." + this.metadata.nestedSetLeftColumn.propertyPath + " BETWEEN " +
alias + "." + this.metadata.nestedSetLeftColumn.propertyPath + " AND " + alias + "." + this.metadata.nestedSetRightColumn.propertyPath;
var parameters_4 = {};
var whereCondition = this.metadata.treeParentRelation.joinColumns.map(function (joinColumn) {
var parameterName = joinColumn.referencedColumn.propertyPath.replace(".", "_");
parameters_4[parameterName] = joinColumn.referencedColumn.getEntityValue(entity);
return "joined." + joinColumn.referencedColumn.propertyPath + " = :" + parameterName;
}).join(" AND ");
return this
.createQueryBuilder(alias)
.innerJoin(this.metadata.targetName, "joined", joinCondition)
.where(whereCondition, parameters_4);
}
else if (this.metadata.treeType === "materialized-path") {
// example: SELECT * FROM category category WHERE (SELECT mpath FROM `category` WHERE id = 2) LIKE CONCAT(category.mpath, '%');
return this
.createQueryBuilder(alias)
.where(function (qb) {
var subQuery = qb.subQuery()
.select(_this.metadata.targetName + "." + _this.metadata.materializedPathColumn.propertyPath, "path")
.from(_this.metadata.target, _this.metadata.targetName)
.whereInIds(_this.metadata.getEntityIdMap(entity));
qb.setNativeParameters(subQuery.expressionMap.nativeParameters);
if (_this.manager.connection.driver instanceof AbstractSqliteDriver_1.AbstractSqliteDriver) {
return subQuery.getQuery() + " LIKE " + alias + "." + _this.metadata.materializedPathColumn.propertyPath + " || '%'";
}
else {
return subQuery.getQuery() + " LIKE CONCAT(" + alias + "." + _this.metadata.materializedPathColumn.propertyPath + ", '%')";
}
});
}
throw new Error("Supported only in tree entities");
};
/**
* Moves entity to the children of then given entity.
*
move(entity: Entity, to: Entity): Promise<void> {
return Promise.resolve();
} */
// -------------------------------------------------------------------------
// Protected Methods
// -------------------------------------------------------------------------
TreeRepository.prototype.createRelationMaps = function (alias, rawResults) {
var _this = this;
return rawResults.map(function (rawResult) {
var joinColumn = _this.metadata.treeParentRelation.joinColumns[0];
// fixes issue #2518, default to databaseName property when givenDatabaseName is not set
var joinColumnName = joinColumn.givenDatabaseName || joinColumn.databaseName;
var id = rawResult[alias + "_" + _this.metadata.primaryColumns[0].databaseName];
var parentId = rawResult[alias + "_" + joinColumnName];
return {
id: _this.manager.connection.driver.prepareHydratedValue(id, _this.metadata.primaryColumns[0]),
parentId: _this.manager.connection.driver.prepareHydratedValue(parentId, joinColumn),
};
});
};
TreeRepository.prototype.buildChildrenEntityTree = function (entity, entities, relationMaps) {
var _this = this;
var childProperty = this.metadata.treeChildrenRelation.propertyName;
var parentEntityId = this.metadata.primaryColumns[0].getEntityValue(entity);
var childRelationMaps = relationMaps.filter(function (relationMap) { return relationMap.parentId === parentEntityId; });
var childIds = new Set(childRelationMaps.map(function (relationMap) { return relationMap.id; }));
entity[childProperty] = entities.filter(function (entity) { return childIds.has(_this.metadata.primaryColumns[0].getEntityValue(entity)); });
entity[childProperty].forEach(function (childEntity) {
_this.buildChildrenEntityTree(childEntity, entities, relationMaps);
});
};
TreeRepository.prototype.buildParentEntityTree = function (entity, entities, relationMaps) {
var _this = this;
var parentProperty = this.metadata.treeParentRelation.propertyName;
var entityId = this.metadata.primaryColumns[0].getEntityValue(entity);
var parentRelationMap = relationMaps.find(function (relationMap) { return relationMap.id === entityId; });
var parentEntity = entities.find(function (entity) {
if (!parentRelationMap)
return false;
return _this.metadata.primaryColumns[0].getEntityValue(entity) === parentRelationMap.parentId;
});
if (parentEntity) {
entity[parentProperty] = parentEntity;
this.buildParentEntityTree(entity[parentProperty], entities, relationMaps);
}
};
return TreeRepository;
}(Repository_1.Repository));
exports.TreeRepository = TreeRepository;
//# sourceMappingURL=TreeRepository.js.map