apm_dependency_provided_p (public)

 apm_dependency_provided_p [ -dependency_list dependency_list ] \
    dependency_uri dependency_version

Defined in packages/acs-tcl/tcl/apm-install-procs.tcl

Returns 1 if the current system provides the dependency inquired about. Returns -1 if the version number is too low. Returns 0 otherwise.

Switches:

-dependency_list

(defaults to "[list]") (optional)

Specify this if you want to a check a list of dependencies of form {dependency_name dependency_version} in addition to querying the database for what the system currently provides.

Parameters:

dependency_uri - The dependency that is being checked.
dependency_version - The version of the dependency being checked.

Partial Call Graph (max 5 caller/called nodes):

Testcases:

No testcase defined.

Source code:

    set old_version_p 0
    set found_p 0
    ns_log Debug "apm_dependency_provided_p: Scanning for $dependency_uri version $dependency_version"
    foreach service_version [db_list get_service_versions {}] {
        set version_p [expr {[apm_version_names_compare $service_version $dependency_version] >= 0}]
        if { $version_p } {
            ns_log Debug "apm_dependency_provided_p: Dependency satisfied by previously installed package"
            set found_p 1
        } else {
            set old_version_p 1
        }
    }

    # Can't return while inside a db_foreach.
    if {$found_p} {
        return 1
    }

    if { $dependency_list ne "" } {
        # They provided a list of provisions.
        foreach prov $dependency_list {
            if {$dependency_uri eq [lindex $prov 0]} {

                set provided_version [lindex $prov 1]
                set provided_p [expr {[apm_version_names_compare $provided_version $dependency_version] >= 0}]
                if { $provided_p } {
                    ns_log Debug "apm_dependency_provided_p: Dependency satisfied in list of provisions."
                    return 1
                } else {
                    set old_version_p 1
                }
            }
        }
    }

    if { $old_version_p} {
        return -1
    } else {
        return 0
    }

Generic XQL file:

<fullquery name="apm_dependency_provided_p.get_service_versions">
    <querytext>
      
	select service_version
	from apm_package_dependencies d, apm_package_types a, apm_package_versions v
	where d.dependency_type = 'provides'
	and d.version_id = v.version_id
	and d.service_uri = :dependency_uri
	and v.installed_p = 't'
	and a.package_key = v.package_key
    
      </querytext>
</fullquery>

packages/acs-tcl/tcl/apm-install-procs.xql

PostgreSQL XQL file:

packages/acs-tcl/tcl/apm-install-procs-postgresql.xql

Oracle XQL file:

packages/acs-tcl/tcl/apm-install-procs-oracle.xql