# Path-параметры и валидация числовых данных { #path-parameters-and-numeric-validations }

Так же, как с помощью `Query` вы можете добавлять валидацию и метаданные для query-параметров, так и с помощью `Path` вы можете добавлять такую же валидацию и метаданные для path-параметров.

## Импорт `Path` { #import-path }

Сначала импортируйте `Path` из `fastapi`, а также импортируйте `Annotated`:

	vArr, vOK := v.ToArray()
	if aOK && vOK {
		return arrayCompare(op, aArr, vArr)
	}

	isNumeric := v.isNumeric() && a.isNumeric()
	if isNumeric {
		intV, ok1i := v.ToInt()
		intA, ok2i := a.ToInt()
		if ok1i && ok2i {
			return intCompare(op, intV, intA), nil
		}

		// If both values are numeric, then at least one is
		// float since we got here, so we convert.
		flV, _ := v.ToFloat()

import jcifs.smb1.dcerpc.msrpc.SamrPolicyHandle;
import jcifs.smb1.dcerpc.msrpc.lsarpc;
import jcifs.smb1.dcerpc.msrpc.samr;
import jcifs.smb1.util.Hexdump;

/**
 * A Windows SID is a numeric identifier used to represent Windows
 * accounts. SIDs are commonly represented using a textual format such as
 * {@code S-1-5-21-1496946806-2192648263-3843101252-1029} but they may

	case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
		i, err := d.number()
		return i, Number, err
	case '-':
		if c = d.next(); c < '0' || c > '9' {
			return nil, Unknown, d.mkError(ErrSyntax, "in negative numeric literal")
		}
		n, err := d.number()
		if err != nil {
			return nil, Unknown, err
		}
		return -n, Number, nil
	case 'f':
		if d.remaining() < 4 {
			return nil, Unknown, d.mkError(ErrUnexpectedEOF)

type CastFunc struct {
	Expr     *Expression `parser:" \"CAST\" \"(\" @@ "`
	CastType string      `parser:" \"AS\" @(\"BOOL\" | \"INT\" | \"INTEGER\" | \"STRING\" | \"FLOAT\" | \"DECIMAL\" | \"NUMERIC\" | \"TIMESTAMP\") \")\" "`
}

// SubstringFunc represents SUBSTRING sql function
type SubstringFunc struct {
	Expr *PrimaryTerm `parser:" \"SUBSTRING\" \"(\" @@ "`
	From *Operand     `parser:" ( \"FROM\" @@ "`

        int LIST_ITEM = 2;
        int COMBINATION_ITEM = 5;

        int compareTo(Item item);

        int getType();

        boolean isNull();
    }

    /**
     * Represents a numeric item in the version item list that can be represented with an int.
     */
    private static class IntItem implements Item {
        private final int value;

        public static final IntItem ZERO = new IntItem();

	if v1.IsNull() || v2.IsNull() {
		return v1, nil
	}

	err = inferTypesForCmp(v1, v2)
	if err != nil {
		return nil, err
	}

	atleastOneNumeric := v1.isNumeric() || v2.isNumeric()
	bothNumeric := v1.isNumeric() && v2.isNumeric()
	if atleastOneNumeric || !bothNumeric {
		return v1, nil
	}

	if v1.SameTypeAs(*v2) {
		return v1, nil
	}

	cmpResult, cmpErr := v1.compareOp(opEq, v2)

	// is used when autogenerating new credentials.
	// There is no max length enforcement for secret keys
	secretKeyMaxLen = 40

	// Alpha numeric table used for generating access keys.
	alphaNumericTable = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"

	// Total length of the alpha numeric table.
	alphaNumericTableLen = byte(len(alphaNumericTable))

	reservedChars = "=,"
)

	lval, lerr := e.Left.evalNode(r, tableAlias)
	if lerr != nil || len(e.Right) == 0 {
		return lval, lerr
	}

	// Process remaining child nodes - result must be
	// numeric. This AST node is for terms separated by + or -
	// symbols.
	for _, rightTerm := range e.Right {
		op := rightTerm.Op
		rval, rerr := rightTerm.Right.evalNode(r, tableAlias)
		if rerr != nil {
			return nil, rerr

        assertEquals(8, serverData.encryptionKey.length);
        assertEquals(16, serverData.guid.length);
    }

    /**
     * Test edge cases for numeric fields
     */
    @Test
    @DisplayName("Test edge cases for numeric fields")
    public void testNumericFieldsEdgeCases() {
        // Test maximum values for int fields
        serverData.sflags2 = Integer.MAX_VALUE;