defxmlschema/chapter06¶

Example 6-1 Global element declarations¶

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://datypic.com/prod" targetNamespace="http://datypic.com/prod">
  <xs:element name="name" type="xs:string" />
  <xs:element name="size" type="xs:integer" />
  <xs:complexType name="ProductType">
    <xs:sequence>
      <xs:element ref="name" />
      <xs:element ref="size" minOccurs="0" />
    </xs:sequence>
  </xs:complexType>
</xs:schema>

from dataclasses import dataclass, field
from typing import Optional


@dataclass
class Name:
    """
    :ivar value:
    """
    class Meta:
        name = "name"

    value: Optional[str] = field(
        default=None,
        metadata=dict(
            name="value",
            type="Extension"
        )
    )


@dataclass
class Size:
    """
    :ivar value:
    """
    class Meta:
        name = "size"

    value: Optional[int] = field(
        default=None,
        metadata=dict(
            name="value",
            type="Extension"
        )
    )


@dataclass
class ProductType:
    """
    :ivar name:
    :ivar size:
    """
    name: Optional[Name] = field(
        default=None,
        metadata=dict(
            name="name",
            type="Element",
            required=True
        )
    )
    size: Optional[Size] = field(
        default=None,
        metadata=dict(
            name="size",
            type="Element"
        )
    )

Example 6-11 Specifying an element’s default value¶

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="product">
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="name" type="xs:string" default="N/A" />
        <xs:element name="size" type="xs:integer" default="12" />
      </xs:choice>
    </xs:complexType>
  </xs:element>
</xs:schema>

from dataclasses import dataclass, field


@dataclass
class Product:
    """
    :ivar name:
    :ivar size:
    """
    class Meta:
        name = "product"

    name: str = field(
        default="N/A",
        metadata=dict(
            name="name",
            type="Element"
        )
    )
    size: int = field(
        default=12,
        metadata=dict(
            name="size",
            type="Element"
        )
    )

Example 6-15 Making size elements nillable¶

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="size" type="xs:integer" nillable="true" />
</xs:schema>

from dataclasses import dataclass, field
from typing import Optional


@dataclass
class Size:
    """
    :ivar value:
    """
    class Meta:
        name = "size"

    value: Optional[int] = field(
        default=None,
        metadata=dict(
            name="value",
            type="Extension"
        )
    )

Example 6-3 Local element declarations¶

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://datypic.com/prod" targetNamespace="http://datypic.com/prod">
  <xs:complexType name="ProductType">
    <xs:sequence>
      <xs:element name="name" type="xs:string" />
      <xs:element name="size" type="xs:integer" minOccurs="0" />
    </xs:sequence>
  </xs:complexType>
</xs:schema>

from dataclasses import dataclass, field
from typing import Optional


@dataclass
class ProductType:
    """
    :ivar name:
    :ivar size:
    """
    name: Optional[str] = field(
        default=None,
        metadata=dict(
            name="name",
            type="Element",
            required=True
        )
    )
    size: Optional[int] = field(
        default=None,
        metadata=dict(
            name="size",
            type="Element"
        )
    )

Example 6-7 Schema for qualified local element names¶

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://datypic.com/prod" targetNamespace="http://datypic.com/prod" elementFormDefault="qualified">
  <xs:element name="product" type="ProductType" />
  <xs:complexType name="ProductType">
    <xs:sequence>
      <xs:element name="number" type="xs:integer" />
      <xs:element name="size" type="xs:integer" />
    </xs:sequence>
  </xs:complexType>
</xs:schema>

from dataclasses import dataclass, field
from typing import Optional


@dataclass
class ProductType:
    """
    :ivar number:
    :ivar size:
    """
    number: Optional[int] = field(
        default=None,
        metadata=dict(
            name="number",
            type="Element",
            namespace="http://datypic.com/prod",
            required=True
        )
    )
    size: Optional[int] = field(
        default=None,
        metadata=dict(
            name="size",
            type="Element",
            namespace="http://datypic.com/prod",
            required=True
        )
    )


@dataclass
class Product(ProductType):
    class Meta:
        name = "product"
        namespace = "http://datypic.com/prod"

Example 6-8 Using the form attribute¶

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://datypic.com/prod" targetNamespace="http://datypic.com/prod" elementFormDefault="qualified">
  <xs:element name="product" type="ProductType" />
  <xs:complexType name="ProductType">
    <xs:sequence>
      <xs:element name="number" type="xs:integer" form="unqualified" />
      <xs:element name="size" type="xs:integer" />
    </xs:sequence>
  </xs:complexType>
</xs:schema>

from dataclasses import dataclass, field
from typing import Optional


@dataclass
class ProductType:
    """
    :ivar number:
    :ivar size:
    """
    number: Optional[int] = field(
        default=None,
        metadata=dict(
            name="number",
            type="Element",
            required=True
        )
    )
    size: Optional[int] = field(
        default=None,
        metadata=dict(
            name="size",
            type="Element",
            namespace="http://datypic.com/prod",
            required=True
        )
    )


@dataclass
class Product(ProductType):
    class Meta:
        name = "product"
        namespace = "http://datypic.com/prod"

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