currentDatabase := m.DB.Migrator().CurrentDatabase()
		constraint, table := m.GuessConstraintInterfaceAndTable(stmt, name)
		if constraint != nil {
			name = constraint.GetName()
		}

		return m.DB.Raw(
			"SELECT count(*) FROM INFORMATION_SCHEMA.table_constraints WHERE constraint_schema = ? AND table_name = ? AND constraint_name = ?",
			currentDatabase, table, name,
		).Row().Scan(&count)
	})

	sql = "CONSTRAINT ? FOREIGN KEY ? REFERENCES ??"
	if constraint.OnDelete != "" {
		sql += " ON DELETE " + constraint.OnDelete
	}

	if constraint.OnUpdate != "" {
		sql += " ON UPDATE " + constraint.OnUpdate
	}

	foreignKeys := make([]interface{}, 0, len(constraint.ForeignKeys))
	for _, field := range constraint.ForeignKeys {
		foreignKeys = append(foreignKeys, clause.Column{Name: field.DBName})

        <constraint name="__context__" within="" contains="" />
        <constraint name="TYPE" within="" contains="" />
        <constraint name="ARR" nameOfExprType=".*\[\]" within="" contains="" />
        <constraint name="RES" nameOfExprType="boolean" exprTypeWithinHierarchy="true" within="" contains="" />
        <constraint name="ITEM" within="" contains="" />
        <constraint name="TARGET" within="" contains="" />

        return delegate.parseVersionRange(range);
    }

    @Override
    public VersionConstraint parseVersionConstraint(String constraint) throws InvalidVersionSpecificationException {
        return delegate.parseVersionConstraint(constraint);
    }

     */
    @Nonnull
    VersionRange parseVersionRange(@Nonnull String range);

    /**
     * Parses the specified version constraint specification, for example "1.0" or "[1.0,2.0)".
     *
     * @param constraint the range specification to parse, must not be {@code null}
     * @return the parsed version constraint, never {@code null}
     * @throws VersionParserException if the range specification violates the syntax rules of this scheme
     */

    }

    @Override
    public VersionConstraint parseVersionConstraint(String constraint) {
        requireNonNull(constraint, "constraint");
        return new DefaultVersionConstraint(versionScheme, constraint);
    }

    static class DefaultVersion implements Version {
        private final VersionScheme versionScheme;

	// ErrDuplicatedKey occurs when there is a unique key constraint violation
	ErrDuplicatedKey = errors.New("duplicated key not allowed")
	// ErrForeignKeyViolated occurs when there is a foreign key constraint violation
	ErrForeignKeyViolated = errors.New("violates foreign key constraint")
	// ErrCheckConstraintViolated occurs when there is a check constraint violation
	ErrCheckConstraintViolated = errors.New("violates check constraint")

        return modelVersionParser.parseVersionRange(range);
    }

    @Override
    public VersionConstraint parseVersionConstraint(String constraint) {
        return modelVersionParser.parseVersionConstraint(constraint);
    }

    @Override
    public boolean isSnapshot(String version) {
        return modelVersionParser.isSnapshot(version);
    }

config_setting(
    name = "android",
    constraint_values = if_google(
        ["//third_party/bazel_platforms/os:android"],
        [],
    ),
    values = if_oss(
        {"crosstool_top": "//external:android/crosstool"},
        {},
    ),
    visibility = ["//visibility:public"],
)

config_setting(
    name = "android_x86",
    constraint_values = if_google(

	replaceDirective = "REPLACE"
	accessDirective  = "ACCESS"
)

// Parses location constraint from the incoming reader.
func parseLocationConstraint(r *http.Request) (location string, s3Error APIErrorCode) {
	// If the request has no body with content-length set to 0,
	// we do not have to validate location constraint. Bucket will
	// be created at default region.
	locationConstraint := createBucketLocationConfiguration{}