(component group) – Container for components of a bibliographic entity.
Module MEI.frbr
@label(optional)Provides a name or label for an element. The value may be any string. Value of datatype string. att.commonPart
@n(optional)Provides a number-like designation for an element. Value conforms to token. att.common
@xml:base(optional)Provides a base URI reference with which applications can resolve relative URI references into absolute URI references. Value conforms to data.URI. att.commonPart
@xml:id(optional)Regularizes the naming of an element and thus facilitates building links between it and other resources. Each id attribute within a document must have a unique value. Value of datatype ID. att.id
Member of
Contained by
MEI.headersource work
May contain
MEI.headersource work
<memberOf key="att.common"/>
<rng:ref name="model.headLike" />
<rng:ref name="model.workLike" />
<rng:ref name="model.expressionLike" />
<rng:ref name="model.manifestationLike" />
<rng:ref name="model.itemLike" />

The child elements of this element are treated as parts of the bibliographic entity containing the componentGrp. Although this is an implicit way of expressing FRBR's hasPart / isPartOf-relationships, it avoids this terminology in order to prevent confusion with musical terminology. All children of a component must be the same type as its parent: only work children are allowed within work, item in item, etc.

Only child elements of the same name as the parent of the componentGrp are allowed.
<sch:rule context="mei:componentGrp">
<sch:assert test="every $i in ./child::mei:*[not(local-name()='head')] satisfies $i/local-name() eq ./parent::mei:*/local-name()">Only child elements of the same name as the parent of the componentGrp are allowed.</sch:assert>