Package com.microstrategy.web.objects

Class RWViewLimitHelper

    • Method Detail

      • setNodeLimitInfo

        public void setNodeLimitInfo​(WebNode node,
                             java.lang.String unitId)

      • consolidateUnitLimit

        protected void consolidateUnitLimit​(com.microstrategy.web.objects.WebExpressionImpl unitLimit)

      • replaceUnitLimit

        public void replaceUnitLimit​(WebNode node,
                             boolean blockAutoSync)

      • getUnitNode

        public WebNode getUnitNode​(WebNode node)
        Gets a root node of the unit limit expression for a given expression node
        Specified by:
        getUnitNode in interface WebLimitExpressionHelper
        Parameters:
        node - expression node
        Returns:
        node

      • findUnitNode

        public WebNode findUnitNode​(java.lang.String unitId)
        Finds a root node of the unit limit expression
        Specified by:
        findUnitNode in interface WebLimitExpressionHelper
        Parameters:
        unitId - an ID of the working set unit
        Returns:
        node or null

      • getNodeGroupId

        public java.lang.String getNodeGroupId​(WebNode node)
        Returns limit group ID of the given node
        Specified by:
        getNodeGroupId in interface WebLimitExpressionHelper
        Parameters:
        node - node
        Returns:
        group ID

      • canUngroup

        public boolean canUngroup​(WebNode firstNode,
                          WebNode secondNode)
                   throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Check whether it is possible to call ungroup() on the two given nodes.
        Specified by:
        canUngroup in interface WebExpressionHelper
        Parameters:
        firstNode - The first node.
        secondNode - The second node.
        Returns:
        True if calling ungroup() on the two given nodes will not cause an error, or false if it is not possible to ungroup the two given nodes.
        Throws:
        java.lang.IllegalArgumentException - Thrown if either input parameter is null.

      • canGroup

        public boolean canGroup​(WebNode firstNode,
                        WebNode secondNode)
                 throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Check whether it is possible to call group() on the two given nodes.
        Specified by:
        canGroup in interface WebExpressionHelper
        Parameters:
        firstNode - The first node.
        secondNode - The second node.
        Returns:
        True if calling group() on the two given nodes will not cause an error, or false if it is not possible to group the two given nodes.
        Throws:
        java.lang.IllegalArgumentException - Thrown if either input parameter is null.

      • canSwapWithNext

        public boolean canSwapWithNext​(WebNode node)
                        throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Checks whether it is possible to call swapWithNext() on the given node.
        Specified by:
        canSwapWithNext in interface WebExpressionHelper
        Parameters:
        node - The node to be swapped.
        Returns:
        True if swapWithNext will not cause an error, false otherwise.
        Throws:
        java.lang.IllegalArgumentException - Thrown if the node parameter is null.

      • canSwapWithPrevious

        public boolean canSwapWithPrevious​(WebNode node)
                            throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Checks whether it is possible to call swapWithPrevious() on the given node.
        Specified by:
        canSwapWithPrevious in interface WebExpressionHelper
        Parameters:
        node - The node to be swapped.
        Returns:
        True if swapWithPrevious will not cause an error, false otherwise.
        Throws:
        java.lang.IllegalArgumentException - Thrown if the node parameter is null.

      • findTarget

        protected com.microstrategy.web.objects.WebObjectInfoImpl findTarget​(WebNode node)

      • getTarget

        protected com.microstrategy.web.objects.WebObjectInfoImpl getTarget​(WebNode node)

      • hasUnussignedPrompts

        public boolean hasUnussignedPrompts​(WebNode node)
        Returns true if the given node contains unresolved prompts. In this case we don't know what unit to ussign this limit to.
        Specified by:
        hasUnussignedPrompts in interface WebLimitExpressionHelper
        Parameters:
        node -

      • consolidateTree

        public void consolidateTree()
        Description copied from interface: WebExpressionHelper
        Consolidates the whole expression tree.

        Consolidation rules:

        1. Any branch qualification (AND, OR, or NOT) which has no child nodes will be removed.
        2. Branch qualifications (AND, OR), which have 1 child node will be removed and the tree adjusted such that the expression's meaning will not be changed.
        3. If a NOT node has a NOT node as it's child node, both not nodes will be removed.
        4. Any AND or OR node, can not have its first child as NOT node,
          1. If the first child is a NOT node,
            1. if there is at least one non-NOT child, try to swap with the first non-NOT child
            2. else, create a NOT node, move current AND or OR node under the NOT node, then change the AND to OR, OR to AND, then replace all NOT children with their children. Eg. (NOT A AND NOT B) -> NOT (A OR B)

        Note that this operation will be performed on the tree after every operation if the auto-consolidation setting is true.
        Specified by:
        consolidateTree in interface WebExpressionHelper

      • group

        public WebNode group​(WebNode firstNode,
                     WebNode secondNode)
              throws java.lang.IllegalArgumentException,
                     WebObjectsException
        Description copied from interface: WebExpressionHelper
        Group two nodes in the expression together. The two nodes given must either share a parent node or for the first node and the parent node of the second child (which must be a NOT node) share a common parent node. In the second case, the operator will be considered to be the parent and the not node combined(i.e. AND NOT or OR NOT). This method will create a new node, which will have the same function (AND or OR) as the original parent of these two nodes. The new node is inserted at the position of the first given node, and the two given nodes will be set as child nodes of the newly created node.
        Specified by:
        group in interface WebExpressionHelper
        Parameters:
        firstNode - The first input parameter, which must share a parent with secondNode
        secondNode - The second input parameter, which must either share a parent with firstNode or the parent node must be a NOT node, and that node must share a parent with the firstNode.
        Returns:
        The new parent node of the two given nodes.
        Throws:
        java.lang.IllegalArgumentException - Thrown if either input parameter is null.
        WebObjectsException - Thrown when the parent of one child is not a branch qualification operator, when these children do not share the same parent, or when one of the input nodes is the root node of the expression.

      • group

        public WebNode group​(int firstKey,
                     int secondKey)
              throws java.lang.IllegalArgumentException,
                     WebObjectsException
        Description copied from interface: WebExpressionHelper
        Group two nodes in the expression together. This method is used to identify the nodes by the key of the expression. The two nodes given must either share a parent node or for the first node and the parent node of the second child (which must be a NOT node) share a common parent node. In the second case, the operator will be considered to be the parent and the not node combined(i.e. AND NOT or OR NOT). This method will create a new node, which will have the same function (AND or OR) as the original parent of these two nodes. The new node is inserted at the position of the first given node, and the two given nodes will be set as child nodes of the newly created node.
        Specified by:
        group in interface WebExpressionHelper
        Parameters:
        firstKey - The key of the first node.
        secondKey - The key of the second node. the parent node must be a NOT node, and that node must share a parent with the firstNode.
        Returns:
        The new parent node of the two given nodes.
        Throws:
        java.lang.IllegalArgumentException - Thrown if either input parameter is null.
        WebObjectsException - Thrown when the parent of one child is not a branch qualification operator, when these children do not share the same parent, or when one of the input nodes is the root node of the expression.

      • ungroup

        public void ungroup​(WebNode firstNode,
                    WebNode secondNode)
             throws java.lang.IllegalArgumentException,
                    WebObjectsException
        Description copied from interface: WebExpressionHelper
        Ungroup two nodes in the expression. The parent of both given nodes, which is an operator node, will be removed and the two child nodes will be moved to the removed node's position in the expression. The two nodes given must either share a parent node or for the first node and the parent node of the second child (which must be a NOT node) share a common parent node. In the second case, the operator will be considered to be the parent and the not node combined(i.e. AND NOT or OR NOT).
        Specified by:
        ungroup in interface WebExpressionHelper
        Parameters:
        firstNode - The first node to be ungrouped.
        secondNode - The second node to be ungrouped.
        Throws:
        java.lang.IllegalArgumentException - Thrown when one of the input parameters is null.
        WebObjectsException - Thrown when parent node of one of the given nodes is not a branch qualificaiton operator, when the given nodes do not share the same parent, or when one of the input nodes or the parent of the input nodes is the root node of the expression.

      • ungroup

        public void ungroup​(int firstKey,
                    int secondKey)
             throws java.lang.IllegalArgumentException,
                    WebObjectsException
        Description copied from interface: WebExpressionHelper
        Ungroup two nodes in the expression. This method allows the user to specify the nodes to be ungrouped by their keys. The parent of both given nodes, which is an operator node, will be removed and the two child nodes will be moved to the removed node's position in the expression. The two nodes given must either share a parent node or for the first node and the parent node of the second child (which must be a NOT node) share a common parent node. In the second case, the operator will be considered to be the parent and the not node combined(i.e. AND NOT or OR NOT).
        Specified by:
        ungroup in interface WebExpressionHelper
        Parameters:
        firstKey - The key of first node to be ungrouped.
        secondKey - The key of second node to be ungrouped.
        Throws:
        java.lang.IllegalArgumentException - Thrown when one of the input parameters is null.
        WebObjectsException - Thrown when parent node of one of the given nodes is not a branch qualificaiton operator, when the given nodes do not share the same parent, or when one of the input nodes or the parent of the input nodes is the root node of the expression.

      • swap

        public void swap​(WebNode firstNode,
                 WebNode secondNode)
          throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Swap two nodes in the expression. These two nodes can be anywhere in the expression tree. After calling this method, the two nodes' locations will be swapped.
        Specified by:
        swap in interface WebExpressionHelper
        Parameters:
        firstNode - The first node to be swapped.
        secondNode - The second node to be swapped.
        Throws:
        java.lang.IllegalArgumentException - Thrown when the input parameter is null.

      • swap

        public void swap​(int firstKey,
                 int secondKey)
          throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Swap two nodes in the expression. These two nodes can be anywhere in the expression tree. After calling this method, the two nodes' locations will be swapped.
        Specified by:
        swap in interface WebExpressionHelper
        Parameters:
        firstKey - The key of the first node to be swapped.
        secondKey - The key of the second node to be swapped.
        Throws:
        java.lang.IllegalArgumentException - Thrown when one of the keys do not exist in the expression tree.

      • swapWithPrevious

        public void swapWithPrevious​(WebNode node)
                      throws java.lang.IllegalArgumentException,
                             WebObjectsException
        Swap with previous sibling. If the node is the first child, it can not be moved forward further. Exception: If parent node is NOT node, swap with the NOT's previous sibling If previous sibling is NOT node, swap with its child
        Specified by:
        swapWithPrevious in interface WebExpressionHelper
        Parameters:
        node - The node to be swapped.
        Throws:
        java.lang.IllegalArgumentException - Thrown when the input parameter is null.
        WebObjectsException - Thrown if the parent of the given node is not a branch qualification operator or when there is no previous sibling to swap with.

      • swapWithPrevious

        public void swapWithPrevious​(int nodeKey)
                      throws java.lang.IllegalArgumentException,
                             WebObjectsException
        Description copied from interface: WebExpressionHelper
        Swaps the node with the given key with the previous sibling. This only works if the given node is not the first child of it's parent node.

        There are two special cases:

        • If the parent node is a NOT node, swap the given node with the NOT node's previous sibling.
        • If the previous sibling is a NOT node, swap the given node with its child.
        Specified by:
        swapWithPrevious in interface WebExpressionHelper
        Parameters:
        nodeKey - The key of the node to be swapped.
        Throws:
        java.lang.IllegalArgumentException - Thrown if no node with the given key exists.
        WebObjectsException - Thrown if the parent of the given node is not a branch qualification operator or when there is no previous sibling to swap with.

      • swapWithNext

        public void swapWithNext​(WebNode node)
                  throws java.lang.IllegalArgumentException,
                         WebObjectsException
        Swap with next sibling. If the node is the last child, it can not be moved backward further. Exception: If parent node is NOT node, swap with the NOT's next sibling If next sibling is NOT node, swap with its child
        Specified by:
        swapWithNext in interface WebExpressionHelper
        Parameters:
        node - The node to be swapped.
        Throws:
        java.lang.IllegalArgumentException - Thrown when the input parameter is null.
        WebObjectsException - Thrown if the parent of the given node is not a branch qualification operator or when there is no previous sibling to swap with.

      • swapWithNext

        public void swapWithNext​(int nodeKey)
                  throws java.lang.IllegalArgumentException,
                         WebObjectsException
        Description copied from interface: WebExpressionHelper
        Swaps the node with the given key with its next sibling. This only works if the given node is not the last child of it's parent node.

        There are two special cases:

        • If the parent node is a NOT node, swap the given node with the NOT node's next sibling.
        • If the next sibling is a NOT node, swap the given node with its child.
        Specified by:
        swapWithNext in interface WebExpressionHelper
        Parameters:
        nodeKey - The key of the node to be swapped.
        Throws:
        java.lang.IllegalArgumentException - Thrown if no node with the given key exists.
        WebObjectsException - Thrown if the parent of the given node is not a branch qualification operator or when there is no previous sibling to swap with.

      • toggleFunction

        public void toggleFunction​(int firstKey,
                           int secondKey,
                           int toggleFunction)
                    throws java.lang.IllegalArgumentException,
                           WebObjectsException
        Description copied from interface: WebExpressionHelper
        Change the function between the two nodes with the given keys to the specified function. The functions which are available come from EnumWebToggleFunction. Note that if AND NOT or OR NOT are the original operator, the node directly under the NOT node should be specified as the second argument to this method. These two nodes either should be the direct children of the same parent, or the second node must have a NOT node as its parent which shares a parent with the first argument.

        For example, if there were an AND node, with children firstNode and a NOT node which has the secondNode as a child node, then the original function is considered to be AND NOT.

        Each time, this function will add a new node for the new toggleFunction first. Then if the auto consolidation is set, it may remove the original function node (the shared parent of the two input nodes).

        Specified by:
        toggleFunction in interface WebExpressionHelper
        Parameters:
        firstKey - The key of the first node whose parent operator will be toggled.
        secondKey - The key of the second node whose parent operator will be toggled.
        toggleFunction - The function to toggle to, which is a value from EnumWebToggleFunction.
        Throws:
        java.lang.IllegalArgumentException - Thrown if one of the keys given is not found in the expression.
        WebObjectsException - Thrown if the parent of the given nodes is not aa branch qualification operator, the two given nodes do not share the same parent, or if either the first node, second node, or the shared parent node are the root node of the expression.
        See Also:
        WebExpressionHelper.consolidateTree()

      • toggleFunction

        public void toggleFunction​(WebNode firstNode,
                           WebNode secondNode,
                           int toggleFunction)
                    throws java.lang.IllegalArgumentException,
                           WebObjectsException
        Description copied from interface: WebExpressionHelper
        Change the function between the two given nodes to the specified function. The functions which are available come from EnumWebToggleFunction. Note that if AND NOT or OR NOT are the original operator, the node directly under the NOT node should be specified as the second argument to this method. These two nodes either should be the direct children of the same parent, or the second node must have a NOT node as its parent which shares a parent with the first argument.

        For example, if there were an AND node, with children firstNode and a NOT node which has the secondNode as a child node, then the original function is considered to be AND NOT.

        Each time, this function will add a new node for the new toggleFunction first. Then if the auto consolidation is set, it may remove the original function node (the shared parent of the two input nodes).

        Specified by:
        toggleFunction in interface WebExpressionHelper
        Parameters:
        firstNode - The first node whose parent operator will be toggled.
        secondNode - The second node whose parent operator will be toggled.
        toggleFunction - The function to toggle to, which is a value from EnumWebToggleFunction.
        Throws:
        java.lang.IllegalArgumentException - Thrown when input parameter is null.
        WebObjectsException - Thrown if the parent of the given nodes is not aa branch qualification operator, the two given nodes do not share the same parent, or if either the first node, second node, or the shared parent node are the root node of the expression.
        See Also:
        WebExpressionHelper.consolidateTree()

      • delete

        public void delete​(WebNode node)
            throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Delete the specified node from the expression. If it is the root node of the expression, this method will do nothing.
        Specified by:
        delete in interface WebExpressionHelper
        Parameters:
        node - The node to be deleted.
        Throws:
        java.lang.IllegalArgumentException - Thrown if the input parameter is null.

      • delete

        public void delete​(int nodeKey)
            throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Delete the node with the given key from the expression. If it is the root node of the expression, this method will do nothing.
        Specified by:
        delete in interface WebExpressionHelper
        Parameters:
        nodeKey - The key of the node to be deleted.
        Throws:
        java.lang.IllegalArgumentException - Thrown if the key is not found in the expression.

      • canGroup

        public boolean canGroup​(int firstKey,
                        int secondKey)
                 throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Check whether it is possible to call group() on the two nodes with the given keys.
        Specified by:
        canGroup in interface WebExpressionHelper
        Parameters:
        firstKey - The key of the first node.
        secondKey - The key of the second node.
        Returns:
        True if calling group() on the two given nodes will not cause an error, or false if it is not possible to group the two given nodes.
        Throws:
        java.lang.IllegalArgumentException - Thrown if either key does not exist in the expression.

      • canUngroup

        public boolean canUngroup​(int firstKey,
                          int secondKey)
                   throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Check whether it is possible to call ungroup() on the two nodes with the given keys.
        Specified by:
        canUngroup in interface WebExpressionHelper
        Parameters:
        firstKey - The key of the first node.
        secondKey - The key of the second node.
        Returns:
        True if calling ungroup() on the two given nodes will not cause an error, or false if it is not possible to ungroup the two given nodes.
        Throws:
        java.lang.IllegalArgumentException - Thrown if either key does not exist in the expression.

      • canSwapWithPrevious

        public boolean canSwapWithPrevious​(int nodeKey)
                            throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Checks whether it is possible to call swapWithPrevious() on the node with the given key.
        Specified by:
        canSwapWithPrevious in interface WebExpressionHelper
        Parameters:
        nodeKey - The key of the node to be swapped.
        Returns:
        True if swapWithPrevious will not cause an error, false otherwise.
        Throws:
        java.lang.IllegalArgumentException - Thrown if the node parameter is null.

      • canSwapWithNext

        public boolean canSwapWithNext​(int nodeKey)
                        throws java.lang.IllegalArgumentException
        Description copied from interface: WebExpressionHelper
        Checks whether it is possible to call swapWithNext() on the node with the given key.
        Specified by:
        canSwapWithNext in interface WebExpressionHelper
        Parameters:
        nodeKey - The key of the node to be swapped.
        Returns:
        True if swapWithNext will not cause an error, false otherwise.
        Throws:
        java.lang.IllegalArgumentException - Thrown if the node parameter is null.

      • removeEmptyFilters

        public WebExpression removeEmptyFilters()
        Description copied from interface: WebExpressionHelper
        This method will take the current expression tree and attempt to remove any empty filters in the expression. After doing that, it will consolidate the new expression. This method, if it is necessary to change the expresssion, will return a copy of the current expression; the expression that belongs to this WebExpressionHelper object will never be modified.
        Specified by:
        removeEmptyFilters in interface WebExpressionHelper
        Returns:
        Either the current expression, if no change was needed, or a copy of the current expression that has empty filters removed and is consolidated.
        Since:
        MicroStrategy Web 8.0.1

      • getNewRootNode

        public WebOperatorNode getNewRootNode()
        Creates a new root node for the specified WebExpression. The new root node has function EnumDSSXMLFunction.DssXmlFunctionAnd and expression type EnumDSSXMLExpressionType.DssXmlFilterBranchQual. If the specified WebExpression has any sub expression originally, the sub expression becomes the first child of the new root node after the method call returns.
        Specified by:
        getNewRootNode in interface WebExpressionHelper
        Returns:
        a new root node for the specified expression object.

      • compareTo

        public boolean compareTo​(WebExpression anotherExp)
        Description copied from interface: WebExpressionHelper
        Compares two WebExpression. The comparison is based on the structure of each root node in the expressions.

        Note that this method is currently used to compare the expressions which are used in derived elements editor.

        Specified by:
        compareTo in interface WebExpressionHelper
        Parameters:
        anotherExp - the WebExpression to be compared..
        Returns:
        true if this expression is the same as the anotherExp argument; false otherwise.
        See Also:
        WebExpressionHelper.isEqual(WebNode, WebNode)

      • isEqual

        public boolean isEqual​(WebNode n1,
                       WebNode n2)
        Description copied from interface: WebExpressionHelper
        Checks whether two WebNode are equal.

        Note that this method is currently used to compare the expressions which are used in derived elements editor.

        Specified by:
        isEqual in interface WebExpressionHelper
        Parameters:
        n1 - the first WebNode to check equality
        n2 - the second WebNode to check equality
        Returns:
        true if the two WebNode are the same; false otherwise.

      • validateOperands

        public boolean validateOperands​(WebNode node,
                                RWDataSet ds)
        Description copied from interface: WebExpressionHelper
        Returns whether the given node and its children are valid. The primary use of this is to ensure that the given node is valid within the given RW context.
        Specified by:
        validateOperands in interface WebExpressionHelper
        Parameters:
        node - The WebNode object which will be validated. If null is passed, then the validation will start at the root. Note that all children will be validated as well.
        ds - The dataset which is used to validate if it contains the operand objects
        Returns:
        True if the expression is valid, false if it is not.