Page History
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Implementation tracked in
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.
Intro
- A selector is the part between the first selector delimiter and the extension of an URI. I.e.
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- given
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- a
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- URI
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- like
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- and
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- the
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- tilde
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- character
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- as
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- the
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- delimiter,
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- the
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- entire
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- selector
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- is
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- ~x~foo=bar
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- .
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- A
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- selector
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- can
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- be
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- split
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- in
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- turn
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- into
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- several
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- selectors
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- separated
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- from
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- each
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- other
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- by
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- the
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- same
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- delimiter.
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Rationale
- Selectors existed prior to Magnolia 4.5
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- and
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- they
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- use
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- the
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- .
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- (dot)
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- char
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- as
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- a
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- delimiter.
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- As
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- Magnolia
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- 4.5
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- introduces
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- the
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- possibility
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- to
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- have
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- the
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- dot
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- .
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- character
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- in
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- the
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- node
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- names
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- (as
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- by
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- JCR
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- specification
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...
...
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...
...
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- )
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- the
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- delimiter
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- character
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- needs
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- to
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- be
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- changed.
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Delimiter
info.magnolia.cms.core.Path
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- has
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- a
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SELECTOR_DELIMITER
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- constant
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- (a
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- string)
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- set
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- as
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- ~
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- (tilde).
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Selector
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name-value
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pair
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- a
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- selector
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- can
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- now
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- also
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- be
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- in
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- the
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- form
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- name=value.
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- I.e.
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- given
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- a
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- URI
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- foo=bar
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- is
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- name
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- value
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- selector.
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- This
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- kind
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- of
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- selector
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- is
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- exposed
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- by
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MgnlContext.getAttribute(selectorName)
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- and
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- has
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- a
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- "local"
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- scope
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- (similar
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- to
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- HttpServletRequest
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- scope).
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- Thus,
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- in
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- the
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- current
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- example,
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MgnlContext.getAttribute("foo")
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- will
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- return
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- the
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- String
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- "bar"
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- ,
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- whereas
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MgnlContext.getAttribute("foo",
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Context.SESSION_SCOPE)
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- or
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MgnlContext.getAttribute("foo",
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Context.APPLICATION_SCOPE)
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- will
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- return
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- null
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- .
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AggregationState
- this class exposes some methods to set and get selectors.
setSelector(String selector)is currently used byinfo.magnolia.cms.filters.RepositoryMappingFilter
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- where
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- the
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- request
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- URI
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- is
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- parsed
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- and
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- the
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- selector
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- part
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- extracted.
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String getSelector()
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- returns
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- the
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- whole
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- selector.
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- I.e
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- given
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- the
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- URI
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- this
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- method
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- will
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- return
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- the
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- String
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- x~foo=bar
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String[] getSelectors()
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- returns
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- the
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- selector
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- split
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- into
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- its
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- discrete
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- elements.
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- I.e
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- given
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- the
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- URI
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- this
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- method
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- will
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- return
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- an
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- array
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- of
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- two
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- elements
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- containing
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- the
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- "x"
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- and
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- the
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- "foo=bar"
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- String(s)
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SelectorUtil
- this is a utility class already existing before Magnolia 4.5.
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- It
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- provides
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- two
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- methods
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- which
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- are
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- basically
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- shortcuts
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- to
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- the
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- getters
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- in
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AggregationState
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- :
String getSelector()
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String getSelector(int
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index)
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