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{ ColumnMetadata } from \"../metadata/ColumnMetadata\"\nimport { DataSource } from \"../data-source/DataSource\"\nimport { EntityMetadata } from \"../metadata/EntityMetadata\"\nimport { ForeignKeyMetadata } from \"../metadata/ForeignKeyMetadata\"\nimport { IndexMetadata } from \"../metadata/IndexMetadata\"\nimport { JoinTableMetadataArgs } from \"../metadata-args/JoinTableMetadataArgs\"\nimport { RelationMetadata } from \"../metadata/RelationMetadata\"\nimport { TypeORMError } from \"../error\"\nimport { DriverUtils } from \"../driver/DriverUtils\"\n\n/**\n * Creates EntityMetadata for junction tables.\n * Junction tables are tables generated by many-to-many relations.\n */\nexport class JunctionEntityMetadataBuilder {\n    // -------------------------------------------------------------------------\n    // Constructor\n    // -------------------------------------------------------------------------\n\n    constructor(private connection: DataSource) {}\n\n    // -------------------------------------------------------------------------\n    // Public Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Builds EntityMetadata for the junction of the given many-to-many relation.\n     */\n    build(\n        relation: RelationMetadata,\n        joinTable: JoinTableMetadataArgs,\n    ): EntityMetadata {\n        const referencedColumns = this.collectReferencedColumns(\n            relation,\n            joinTable,\n        )\n        const inverseReferencedColumns = this.collectInverseReferencedColumns(\n            relation,\n            joinTable,\n        )\n\n        const joinTableName =\n            joinTable.name ||\n            this.connection.namingStrategy.joinTableName(\n                relation.entityMetadata.tableNameWithoutPrefix,\n                relation.inverseEntityMetadata.tableNameWithoutPrefix,\n                relation.propertyPath,\n                relation.inverseRelation\n                    ? relation.inverseRelation.propertyName\n                    : \"\",\n            )\n\n        const entityMetadata = new EntityMetadata({\n            connection: this.connection,\n            args: {\n                target: \"\",\n                name: joinTableName,\n                type: \"junction\",\n                database:\n                    joinTable.database || relation.entityMetadata.database,\n                schema: joinTable.schema || relation.entityMetadata.schema,\n                synchronize: joinTable.synchronize,\n            },\n        })\n        entityMetadata.build()\n\n        // create original side junction columns\n        const junctionColumns = referencedColumns.map((referencedColumn) => {\n            const joinColumn = joinTable.joinColumns\n                ? joinTable.joinColumns.find((joinColumnArgs) => {\n                      return (\n                          (!joinColumnArgs.referencedColumnName ||\n                              joinColumnArgs.referencedColumnName ===\n                                  referencedColumn.propertyName) &&\n                          !!joinColumnArgs.name\n                      )\n                  })\n                : undefined\n            const columnName =\n                joinColumn && joinColumn.name\n                    ? joinColumn.name\n                    : this.connection.namingStrategy.joinTableColumnName(\n                          relation.entityMetadata.tableNameWithoutPrefix,\n                          referencedColumn.propertyName,\n                          referencedColumn.databaseName,\n                      )\n\n            return new ColumnMetadata({\n                connection: this.connection,\n                entityMetadata: entityMetadata,\n                referencedColumn: referencedColumn,\n                args: {\n                    target: \"\",\n                    mode: \"virtual\",\n                    propertyName: columnName,\n                    options: {\n                        name: columnName,\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 === \"uuid\" ||\n                                referencedColumn.type === \"uuid\")\n                                ? \"36\"\n                                : referencedColumn.length, // fix https://github.com/typeorm/typeorm/issues/3604\n                        width: referencedColumn.width,\n                        type: referencedColumn.type,\n                        precision: referencedColumn.precision,\n                        scale: referencedColumn.scale,\n                        charset: referencedColumn.charset,\n                        collation: referencedColumn.collation,\n                        zerofill: referencedColumn.zerofill,\n                        unsigned: referencedColumn.zerofill\n                            ? true\n                            : referencedColumn.unsigned,\n                        enum: referencedColumn.enum,\n                        enumName: referencedColumn.enumName,\n                        foreignKeyConstraintName:\n                            joinColumn?.foreignKeyConstraintName,\n                        nullable: false,\n                        primary: true,\n                    },\n                },\n            })\n        })\n\n        // create inverse side junction columns\n        const inverseJunctionColumns = inverseReferencedColumns.map(\n            (inverseReferencedColumn) => {\n                const joinColumn = joinTable.inverseJoinColumns\n                    ? joinTable.inverseJoinColumns.find((joinColumnArgs) => {\n                          return (\n                              (!joinColumnArgs.referencedColumnName ||\n                                  joinColumnArgs.referencedColumnName ===\n                                      inverseReferencedColumn.propertyName) &&\n                              !!joinColumnArgs.name\n                          )\n                      })\n                    : undefined\n                const columnName =\n                    joinColumn && joinColumn.name\n                        ? joinColumn.name\n                        : this.connection.namingStrategy.joinTableInverseColumnName(\n                              relation.inverseEntityMetadata\n                                  .tableNameWithoutPrefix,\n                              inverseReferencedColumn.propertyName,\n                              inverseReferencedColumn.databaseName,\n                          )\n\n                return new ColumnMetadata({\n                    connection: this.connection,\n                    entityMetadata: entityMetadata,\n                    referencedColumn: inverseReferencedColumn,\n                    args: {\n                        target: \"\",\n                        mode: \"virtual\",\n                        propertyName: columnName,\n                        options: {\n                            length:\n                                !inverseReferencedColumn.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                                    inverseReferencedColumn,\n                                ) !== \"uuid\" &&\n                                (inverseReferencedColumn.generationStrategy ===\n                                    \"uuid\" ||\n                                    inverseReferencedColumn.type === \"uuid\")\n                                    ? \"36\"\n                                    : inverseReferencedColumn.length, // fix https://github.com/typeorm/typeorm/issues/3604\n                            width: inverseReferencedColumn.width, // fix https://github.com/typeorm/typeorm/issues/6442\n                            type: inverseReferencedColumn.type,\n                            precision: inverseReferencedColumn.precision,\n                            scale: inverseReferencedColumn.scale,\n                            charset: inverseReferencedColumn.charset,\n                            collation: inverseReferencedColumn.collation,\n                            zerofill: inverseReferencedColumn.zerofill,\n                            unsigned: inverseReferencedColumn.zerofill\n                                ? true\n                                : inverseReferencedColumn.unsigned,\n                            enum: inverseReferencedColumn.enum,\n                            enumName: inverseReferencedColumn.enumName,\n                            foreignKeyConstraintName:\n                                joinColumn?.foreignKeyConstraintName,\n                            name: columnName,\n                            nullable: false,\n                            primary: true,\n                        },\n                    },\n                })\n            },\n        )\n\n        this.changeDuplicatedColumnNames(\n            junctionColumns,\n            inverseJunctionColumns,\n        )\n\n        // set junction table columns\n        entityMetadata.ownerColumns = junctionColumns\n        entityMetadata.inverseColumns = inverseJunctionColumns\n        entityMetadata.ownColumns = [\n            ...junctionColumns,\n            ...inverseJunctionColumns,\n        ]\n        entityMetadata.ownColumns.forEach(\n            (column) => (column.relationMetadata = relation),\n        )\n\n        // create junction table foreign keys\n        // Note: UPDATE CASCADE clause is not supported in Oracle.\n        // Note: UPDATE/DELETE CASCADE clauses are not supported in Spanner.\n        entityMetadata.foreignKeys = relation.createForeignKeyConstraints\n            ? [\n                  new ForeignKeyMetadata({\n                      entityMetadata: entityMetadata,\n                      referencedEntityMetadata: relation.entityMetadata,\n                      columns: junctionColumns,\n                      referencedColumns: referencedColumns,\n                      name: junctionColumns[0]?.foreignKeyConstraintName,\n                      onDelete:\n                          this.connection.driver.options.type === \"spanner\"\n                              ? \"NO ACTION\"\n                              : relation.onDelete || \"CASCADE\",\n                      onUpdate:\n                          this.connection.driver.options.type === \"oracle\" ||\n                          this.connection.driver.options.type === \"spanner\"\n                              ? \"NO ACTION\"\n                              : relation.onUpdate || \"CASCADE\",\n                  }),\n                  new ForeignKeyMetadata({\n                      entityMetadata: entityMetadata,\n                      referencedEntityMetadata: relation.inverseEntityMetadata,\n                      columns: inverseJunctionColumns,\n                      referencedColumns: inverseReferencedColumns,\n                      name: inverseJunctionColumns[0]?.foreignKeyConstraintName,\n                      onDelete:\n                          this.connection.driver.options.type === \"spanner\"\n                              ? \"NO ACTION\"\n                              : relation.inverseRelation\n                              ? relation.inverseRelation.onDelete\n                              : \"CASCADE\",\n                      onUpdate:\n                          this.connection.driver.options.type === \"oracle\" ||\n                          this.connection.driver.options.type === \"spanner\"\n                              ? \"NO ACTION\"\n                              : relation.inverseRelation\n                              ? relation.inverseRelation.onUpdate\n                              : \"CASCADE\",\n                  }),\n              ]\n            : []\n\n        // create junction table indices\n        entityMetadata.ownIndices = [\n            new IndexMetadata({\n                entityMetadata: entityMetadata,\n                columns: junctionColumns,\n                args: {\n                    target: entityMetadata.target,\n                    synchronize: true,\n                },\n            }),\n\n            new IndexMetadata({\n                entityMetadata: entityMetadata,\n                columns: inverseJunctionColumns,\n                args: {\n                    target: entityMetadata.target,\n                    synchronize: true,\n                },\n            }),\n        ]\n\n        // finally return entity metadata\n        return entityMetadata\n    }\n\n    // -------------------------------------------------------------------------\n    // Protected Methods\n    // -------------------------------------------------------------------------\n\n    /**\n     * Collects referenced columns from the given join column args.\n     */\n    protected collectReferencedColumns(\n        relation: RelationMetadata,\n        joinTable: JoinTableMetadataArgs,\n    ): ColumnMetadata[] {\n        const hasAnyReferencedColumnName = joinTable.joinColumns\n            ? joinTable.joinColumns.find(\n                  (joinColumn) => !!joinColumn.referencedColumnName,\n              )\n            : false\n        if (\n            !joinTable.joinColumns ||\n            (joinTable.joinColumns && !hasAnyReferencedColumnName)\n        ) {\n            return relation.entityMetadata.columns.filter(\n                (column) => column.isPrimary,\n            )\n        } else {\n            return joinTable.joinColumns.map((joinColumn) => {\n                const referencedColumn = relation.entityMetadata.columns.find(\n                    (column) =>\n                        column.propertyName === joinColumn.referencedColumnName,\n                )\n                if (!referencedColumn)\n                    throw new TypeORMError(\n                        `Referenced column ${joinColumn.referencedColumnName} was not found in entity ${relation.entityMetadata.name}`,\n                    )\n\n                return referencedColumn\n            })\n        }\n    }\n\n    /**\n     * Collects inverse referenced columns from the given join column args.\n     */\n    protected collectInverseReferencedColumns(\n        relation: RelationMetadata,\n        joinTable: JoinTableMetadataArgs,\n    ): ColumnMetadata[] {\n        const hasInverseJoinColumns = !!joinTable.inverseJoinColumns\n        const hasAnyInverseReferencedColumnName = hasInverseJoinColumns\n            ? joinTable.inverseJoinColumns!.find(\n                  (joinColumn) => !!joinColumn.referencedColumnName,\n              )\n            : false\n        if (\n            !hasInverseJoinColumns ||\n            (hasInverseJoinColumns && !hasAnyInverseReferencedColumnName)\n        ) {\n            return relation.inverseEntityMetadata.primaryColumns\n        } else {\n            return joinTable.inverseJoinColumns!.map((joinColumn) => {\n                const referencedColumn =\n                    relation.inverseEntityMetadata.ownColumns.find(\n                        (column) =>\n                            column.propertyName ===\n                            joinColumn.referencedColumnName,\n                    )\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    protected changeDuplicatedColumnNames(\n        junctionColumns: ColumnMetadata[],\n        inverseJunctionColumns: ColumnMetadata[],\n    ) {\n        junctionColumns.forEach((junctionColumn) => {\n            inverseJunctionColumns.forEach((inverseJunctionColumn) => {\n                if (\n                    junctionColumn.givenDatabaseName ===\n                    inverseJunctionColumn.givenDatabaseName\n                ) {\n                    const junctionColumnName =\n                        this.connection.namingStrategy.joinTableColumnDuplicationPrefix(\n                            junctionColumn.propertyName,\n                            1,\n                        )\n                    junctionColumn.propertyName = junctionColumnName\n                    junctionColumn.givenDatabaseName = junctionColumnName\n\n                    const inverseJunctionColumnName =\n                        this.connection.namingStrategy.joinTableColumnDuplicationPrefix(\n                            inverseJunctionColumn.propertyName,\n                            2,\n                        )\n                    inverseJunctionColumn.propertyName =\n                        inverseJunctionColumnName\n                    inverseJunctionColumn.givenDatabaseName =\n                        inverseJunctionColumnName\n                }\n            })\n        })\n    }\n}\n"],"sourceRoot":".."}