private VersionConstraint checkExistingPlanNode(
ExtensionDependency extensionDependency,
String namespace,
List<ModifableExtensionPlanNode> parentBranch,
VersionConstraint previousVersionConstraint)
throws InstallException {
VersionConstraint versionConstraint = previousVersionConstraint;
ModifableExtensionPlanNode existingNode =
getExtensionNode(extensionDependency.getId(), namespace);
if (existingNode != null) {
if (versionConstraint.isCompatible(
existingNode.getAction().getExtension().getId().getVersion())) {
ModifableExtensionPlanNode node =
new ModifableExtensionPlanNode(extensionDependency, existingNode);
addExtensionNode(node);
parentBranch.add(node);
return null;
} else {
if (existingNode.versionConstraint != null) {
try {
versionConstraint = versionConstraint.merge(existingNode.versionConstraint);
} catch (IncompatibleVersionConstraintException e) {
throw new InstallException(
"Dependency ["
+ extensionDependency
+ "] is incompatible with current containt ["
+ existingNode.versionConstraint
+ "]",
e);
}
} else {
throw new InstallException(
"Dependency ["
+ extensionDependency
+ "] incompatible with extension ["
+ existingNode.getAction().getExtension()
+ "]");
}
}
}
return versionConstraint;
}
/**
* @param extensions the extensions containing the dependencies for which to merge the constraints
* @param dependencyId the id of the dependency
* @param previousMergedVersionContraint if not null it's merged with the provided extension
* dependencies version constraints
* @return the merged version constraint
* @throws IncompatibleVersionConstraintException the provided version constraint is compatible
* with the provided version constraint
*/
private VersionConstraint mergeVersionConstraints(
Collection<? extends Extension> extensions,
String dependencyId,
VersionConstraint previousMergedVersionContraint)
throws IncompatibleVersionConstraintException {
VersionConstraint mergedVersionContraint = previousMergedVersionContraint;
if (extensions != null) {
for (Extension extension : extensions) {
ExtensionDependency dependency = getDependency(extension, dependencyId);
if (dependency != null) {
if (mergedVersionContraint == null) {
mergedVersionContraint = dependency.getVersionConstraint();
} else {
mergedVersionContraint =
mergedVersionContraint.merge(dependency.getVersionConstraint());
}
}
}
}
return mergedVersionContraint;
}