[Share 2.0] Use strings for ids

* sharedWith
* sharedBy
* shareOwner

Now all set/get strings with the id. (userId, groupId,
federatedsharerId).

This to avoid a huge amount of if statements

lib/private/share20/share.php

@@ -121,6 +121,9 @@ class Share implements \OCP\Share\IShare {
 	 * @inheritdoc
 	 */
 	public function setSharedWith($sharedWith) {
+		if (!is_string($sharedWith)) {
+			throw new \InvalidArgumentException();
+		}
 		$this->sharedWith = $sharedWith;
 		return $this;
 	}
@@ -170,6 +173,9 @@ class Share implements \OCP\Share\IShare {
 	 * @inheritdoc
 	 */
 	public function setSharedBy($sharedBy) {
+		if (!is_string($sharedBy)) {
+			throw new \InvalidArgumentException();
+		}
 		//TODO checks
 		$this->sharedBy = $sharedBy;
 
@@ -188,6 +194,9 @@ class Share implements \OCP\Share\IShare {
 	 * @inheritdoc
 	 */
 	public function setShareOwner($shareOwner) {
+		if (!is_string($shareOwner)) {
+			throw new \InvalidArgumentException();
+		}
 		//TODO checks
 
 		$this->shareOwner = $shareOwner;

lib/public/share/ishare.php

@@ -89,7 +89,7 @@ interface IShare {
 	/**
 	 * Set the receiver of this share.
 	 *
-	 * @param IUser|IGroup
+	 * @param string $sharedWith
 	 * @return \OCP\Share\IShare The modified object
 	 * @since 9.0.0
 	 */
@@ -98,7 +98,7 @@ interface IShare {
 	/**
 	 * Get the receiver of this share.
 	 *
-	 * @return IUser|IGroup
+	 * @return string
 	 * @since 9.0.0
 	 */
 	public function getSharedWith();
@@ -142,7 +142,7 @@ interface IShare {
 	/**
 	 * Set the sharer of the path.
 	 *
-	 * @param IUser $sharedBy
+	 * @param string $sharedBy
 	 * @return \OCP\Share\IShare The modified object
 	 * @since 9.0.0
 	 */
@@ -151,7 +151,7 @@ interface IShare {
 	/**
 	 * Get share sharer
 	 *
-	 * @return IUser
+	 * @return string
 	 * @since 9.0.0
 	 */
 	public function getSharedBy();
@@ -159,7 +159,7 @@ interface IShare {
 	/**
 	 * Set the original share owner (who owns the path that is shared)
 	 *
-	 * @param IUser
+	 * @param string $shareOwner
 	 * @return \OCP\Share\IShare The modified object
 	 * @since 9.0.0
 	 */
@@ -168,7 +168,7 @@ interface IShare {
 	/**
 	 * Get the original share owner (who owns the path that is shared)
 	 *
-	 * @return IUser
+	 * @return string
 	 * @since 9.0.0
 	 */
 	public function getShareOwner();

lib/public/share/ishareprovider.php

@@ -74,10 +74,10 @@ interface IShareProvider {
 	 * share from their self then the original group share should still exist.
 	 *
 	 * @param \OCP\Share\IShare $share
-	 * @param IUser $recipient
+	 * @param string $recipient UserId of the recipient
 	 * @since 9.0.0
 	 */
-	public function deleteFromSelf(\OCP\Share\IShare $share, IUser $recipient);
+	public function deleteFromSelf(\OCP\Share\IShare $share, $recipient);
 
 	/**
 	 * Move a share as a recipient.
@@ -86,36 +86,36 @@ interface IShareProvider {
 	 * the target should only be changed for them.
 	 *
 	 * @param \OCP\Share\IShare $share
-	 * @param IUser $recipient
+	 * @param string $recipient userId of recipient
 	 * @return \OCP\Share\IShare
 	 * @since 9.0.0
 	 */
-	public function move(\OCP\Share\IShare $share, IUser $recipient);
+	public function move(\OCP\Share\IShare $share, $recipient);
 
 	/**
 	 * Get all shares by the given user
 	 *
-	 * @param IUser $user
+	 * @param string $userId
 	 * @param int $shareType
 	 * @param \OCP\Files\File|\OCP\Files\Folder $node
 	 * @param bool $reshares Also get the shares where $user is the owner instead of just the shares where $user is the initiator
 	 * @param int $limit The maximum number of shares to be returned, -1 for all shares
 	 * @param int $offset
-	 * @return \OCP\Share\I Share[]
+	 * @return \OCP\Share\IShare Share[]
 	 * @since 9.0.0
 	 */
-	public function getSharesBy(IUser $user, $shareType, $node, $reshares, $limit, $offset);
+	public function getSharesBy($userId, $shareType, $node, $reshares, $limit, $offset);
 
 	/**
 	 * Get share by id
 	 *
 	 * @param int $id
-	 * @param IUser|null $recipient
+	 * @param string|null $recipientId
 	 * @return \OCP\Share\IShare
 	 * @throws ShareNotFound
 	 * @since 9.0.0
 	 */
-	public function getShareById($id, $recipient = null);
+	public function getShareById($id, $recipientId = null);
 
 	/**
 	 * Get shares for a given path
@@ -129,7 +129,7 @@ interface IShareProvider {
 	/**
 	 * Get shared with the given user
 	 *
-	 * @param IUser $user get shares where this user is the recipient
+	 * @param stromg $userId get shares where this user is the recipient
 	 * @param int $shareType
 	 * @param Node|null $node
 	 * @param int $limit The max number of entries returned, -1 for all
@@ -137,7 +137,7 @@ interface IShareProvider {
 	 * @return \OCP\Share\IShare[]
 	 * @since 9.0.0
 	 */
-	public function getSharedWith(IUser $user, $shareType, $node, $limit, $offset);
+	public function getSharedWith($userId, $shareType, $node, $limit, $offset);
 
 	/**
 	 * Get a share by token