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{ ColumnMetadata } from \"../metadata/ColumnMetadata\"\nimport { UniqueMetadata } from \"../metadata/UniqueMetadata\"\nimport { ForeignKeyMetadata } from \"../metadata/ForeignKeyMetadata\"\nimport { RelationMetadata } from \"../metadata/RelationMetadata\"\nimport { JoinColumnMetadataArgs } from \"../metadata-args/JoinColumnMetadataArgs\"\nimport { DataSource } from \"../data-source/DataSource\"\nimport { TypeORMError } from \"../error\"\nimport { DriverUtils } from \"../driver/DriverUtils\"\n\n/**\n * Builds join column for the many-to-one and one-to-one owner relations.\n *\n * Cases it should cover:\n * 1. when join column is set with custom name and without referenced column name\n * we need automatically set referenced column name - primary ids by default\n * @JoinColumn({ name: \"custom_name\" })\n *\n * 2. when join column is set with only referenced column name\n * we need automatically set join column name - relation name + referenced column name\n * @JoinColumn({ referencedColumnName: \"title\" })\n *\n * 3. when join column is set without both referenced column name and join column name\n * we need to automatically set both of them\n * @JoinColumn()\n *\n * 4. when join column is not set at all (as in case of @ManyToOne relation)\n * we need to create join column for it with proper referenced column name and join column name\n *\n * 5. when multiple join columns set none of referencedColumnName and name can be optional\n * both options are required\n * @JoinColumn([\n *      { name: \"category_title\", referencedColumnName: \"type\" },\n *      { name: \"category_title\", referencedColumnName: \"name\" },\n * ])\n *\n * Since for many-to-one relations having JoinColumn decorator is not required,\n * we need to go through each many-to-one relation without join column decorator set\n * and create join column metadata args for them.\n */\nexport class RelationJoinColumnBuilder {\n    // -------------------------------------------------------------------------\n    // Constructor\n    // -------------------------------------------------------------------------\n\n    constructor(private connection: DataSource) {}\n\n    // -------------------------------------------------------------------------\n    // Public Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Builds a foreign key of the many-to-one or one-to-one owner relations.\n     */\n    build(\n        joinColumns: JoinColumnMetadataArgs[],\n        relation: RelationMetadata,\n    ): {\n        foreignKey: ForeignKeyMetadata | undefined\n        columns: ColumnMetadata[]\n        uniqueConstraint: UniqueMetadata | undefined\n    } {\n        const referencedColumns = this.collectReferencedColumns(\n            joinColumns,\n            relation,\n        )\n        const columns = this.collectColumns(\n            joinColumns,\n            relation,\n            referencedColumns,\n        )\n        if (!referencedColumns.length || !relation.createForeignKeyConstraints)\n            return {\n                foreignKey: undefined,\n                columns,\n                uniqueConstraint: undefined,\n            } // this case is possible for one-to-one non owning side and relations with createForeignKeyConstraints = false\n\n        const foreignKey = new ForeignKeyMetadata({\n            name: joinColumns[0]?.foreignKeyConstraintName,\n            entityMetadata: relation.entityMetadata,\n            referencedEntityMetadata: relation.inverseEntityMetadata,\n            namingStrategy: this.connection.namingStrategy,\n            columns,\n            referencedColumns,\n            onDelete: relation.onDelete,\n            onUpdate: relation.onUpdate,\n            deferrable: relation.deferrable,\n        })\n\n        // SQL requires UNIQUE/PK constraints on columns referenced by a FK\n        // Skip creating the unique constraint for the referenced columns if\n        // they are already contained in the PK of the referenced entity\n        if (\n            columns.every((column) => column.isPrimary) ||\n            !relation.isOneToOne\n        ) {\n            return { foreignKey, columns, uniqueConstraint: undefined }\n        }\n\n        const uniqueConstraint = new UniqueMetadata({\n            entityMetadata: relation.entityMetadata,\n            columns: foreignKey.columns,\n            args: {\n                name: this.connection.namingStrategy.relationConstraintName(\n                    relation.entityMetadata.tableName,\n                    foreignKey.columns.map((column) => column.databaseName),\n                ),\n                target: relation.entityMetadata.target,\n            },\n        })\n        uniqueConstraint.build(this.connection.namingStrategy)\n\n        return { foreignKey, columns, uniqueConstraint }\n    }\n\n    // -------------------------------------------------------------------------\n    // Protected Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Collects referenced columns from the given join column args.\n     */\n    protected collectReferencedColumns(\n        joinColumns: JoinColumnMetadataArgs[],\n        relation: RelationMetadata,\n    ): ColumnMetadata[] {\n        const hasAnyReferencedColumnName = joinColumns.find(\n            (joinColumnArgs) => !!joinColumnArgs.referencedColumnName,\n        )\n        const manyToOneWithoutJoinColumn =\n            joinColumns.length === 0 && relation.isManyToOne\n        const hasJoinColumnWithoutAnyReferencedColumnName =\n            joinColumns.length > 0 && !hasAnyReferencedColumnName\n\n        if (\n            manyToOneWithoutJoinColumn ||\n            hasJoinColumnWithoutAnyReferencedColumnName\n        ) {\n            // covers case3 and case1\n            return relation.inverseEntityMetadata.primaryColumns\n        } else {\n            // cases with referenced columns defined\n            return joinColumns.map((joinColumn) => {\n                const referencedColumn =\n                    relation.inverseEntityMetadata.ownColumns.find(\n                        (column) =>\n                            column.propertyName ===\n                            joinColumn.referencedColumnName,\n                    ) // todo: can we also search in relations?\n                if (!referencedColumn)\n                    throw new TypeORMError(\n                        `Referenced column ${joinColumn.referencedColumnName} was not found in entity ${relation.inverseEntityMetadata.name}`,\n                    )\n\n                return referencedColumn\n            })\n        }\n    }\n\n    /**\n     * Collects columns from the given join column args.\n     */\n    private collectColumns(\n        joinColumns: JoinColumnMetadataArgs[],\n        relation: RelationMetadata,\n        referencedColumns: ColumnMetadata[],\n    ): ColumnMetadata[] {\n        return referencedColumns.map((referencedColumn) => {\n            // in the case if relation has join column with only name set we need this check\n            const joinColumnMetadataArg = joinColumns.find((joinColumn) => {\n                return (\n                    (!joinColumn.referencedColumnName ||\n                        joinColumn.referencedColumnName ===\n                            referencedColumn.propertyName) &&\n                    !!joinColumn.name\n                )\n            })\n            const joinColumnName = joinColumnMetadataArg\n                ? joinColumnMetadataArg.name\n                : this.connection.namingStrategy.joinColumnName(\n                      relation.propertyName,\n                      referencedColumn.propertyName,\n                  )\n\n            const relationalColumns = relation.embeddedMetadata\n                ? relation.embeddedMetadata.columns\n                : relation.entityMetadata.ownColumns\n            let relationalColumn = relationalColumns.find(\n                (column) =>\n                    column.databaseNameWithoutPrefixes === joinColumnName,\n            )\n            if (!relationalColumn) {\n                relationalColumn = new ColumnMetadata({\n                    connection: this.connection,\n                    entityMetadata: relation.entityMetadata,\n                    embeddedMetadata: relation.embeddedMetadata,\n                    args: {\n                        target: \"\",\n                        mode: \"virtual\",\n                        propertyName: relation.propertyName,\n                        options: {\n                            name: joinColumnName,\n                            type: referencedColumn.type,\n                            length:\n                                !referencedColumn.length &&\n                                (DriverUtils.isMySQLFamily(\n                                    this.connection.driver,\n                                ) ||\n                                    this.connection.driver.options.type ===\n                                        \"aurora-mysql\") &&\n                                // some versions of mariadb support the column type and should not try to provide the length property\n                                this.connection.driver.normalizeType(\n                                    referencedColumn,\n                                ) !== \"uuid\" &&\n                                (referencedColumn.generationStrategy ===\n                                    \"uuid\" ||\n                                    referencedColumn.type === \"uuid\")\n                                    ? \"36\"\n                                    : referencedColumn.length, // fix https://github.com/typeorm/typeorm/issues/3604\n                            width: referencedColumn.width,\n                            charset: referencedColumn.charset,\n                            collation: referencedColumn.collation,\n                            precision: referencedColumn.precision,\n                            scale: referencedColumn.scale,\n                            zerofill: referencedColumn.zerofill,\n                            unsigned: referencedColumn.unsigned,\n                            comment: referencedColumn.comment,\n                            enum: referencedColumn.enum,\n                            enumName: referencedColumn.enumName,\n                            primary: relation.isPrimary,\n                            nullable: relation.isNullable,\n                        },\n                    },\n                })\n                relation.entityMetadata.registerColumn(relationalColumn)\n            }\n            relationalColumn.referencedColumn = referencedColumn // its important to set it here because we need to set referenced column for user defined join column\n            relationalColumn.type = referencedColumn.type // also since types of relational column and join column must be equal we override user defined column type\n            relationalColumn.relationMetadata = relation\n            relationalColumn.build(this.connection)\n            return relationalColumn\n        })\n    }\n}\n"],"sourceRoot":".."}