Changes between Version 16 and Version 17 of VIQUEN


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Timestamp:
08/18/10 17:05:46 (9 years ago)
Author:
nixdell
Comment:

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  • VIQUEN

    v16 v17  
    2424
    2525=== 2. The operation library palettes ===
    26 The operation library palettes contain icons which represent query operations that may be added to the workspace. The query operations have been divided into five different palettes, with similar operations being grouped together. Operations are added to the main query-building workspace by dragging and dropping the appropriate icon from the relevant palette. Each palette additionally contains an Edge icon for adding directed edges to the data flow workspace. [[BR]]
     26The operation library palettes contain icons which represent query operations that may be added to the workspace. The query operations have been divided into five different palettes, with similar operations being grouped together. Operations are added to the main query-building workspace by dragging and dropping the appropriate icon from the relevant palette. Each palette additionally contains an Edge icon for adding directed edges to the data flow workspace.
     27
    2728The Extract palette contains shortcuts for the 5 Extract operations: Extract Edges, Extract Tree, Extract Reachable, Extract Path and Extract Recursive.[[BR]]
    2829The Delete palette contains shortcuts for the 4 Delete operations: Delete Edges. Delete Node, Delete Property and Delete Tree.[[BR]]
     
    3334
    3435=== 3. The main query-building workspace ===
     36The main query-building workspace has been designed to take advantage of the data flow graph transformation style of IML. Each high-level query operation is represented in its own visual component. Components of the same type are the same color for easy identification. The visual components are then chained together, using directed edges, to compose the entire query.
     37
     38[[Image(photo.jpg)]]
     39A query must begin with a Start node, which indicates the point from which the system will start to compile the query. By positioning the Start node appropriately, different chunks of the query may be executed individually before combining them into a larger query. After the Start node, the query is defined by adding one or more subquery blocks to the workspace.
     40
     41Each subquery block begins with an Input node, which defines the data sources to be used as input to the query.
     42
     43A subquery block must end with an Output node, which specifies the output graph for the block. This output graph may easily be added to the list of potential input data sources by clicking on the "Add to data sources" button and specifying a name for the output graph.
     44
     45Between the Input node and the Output node, a number of different query operations may be added. These are described in detail below.
     46Explain collapse, expand, resize.
     47
     48
    3549
    3650=== 4. The query-building workspace outline ===
     51An outline of the main query-building workspace is provided at the bottom left-hand side of the screen, with a dark blue rectangle indicating the fraction of the workspace currently being viewed. The query workspace may be navigated by clicking and dragging on this rectangle.