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Simplified project structure. Added loading information frame for que…
…ry executions. Fixed a few bugs.
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Vlad-Adrian Moglan
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Feb 4, 2019
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77 changes: 0 additions & 77 deletions
77
src/main/java/com/movlad/semviz/application/QueryManagerController.java
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99 changes: 99 additions & 0 deletions
99
src/main/java/com/movlad/semviz/application/SQMController.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,99 @@ | ||
| package com.movlad.semviz.application; | ||
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| import com.movlad.semviz.core.io.InvalidDirectoryException; | ||
| import com.movlad.semviz.core.sqm.SQM; | ||
| import com.movlad.semviz.core.sqm.SemanticCloudDescription; | ||
| import java.io.FileNotFoundException; | ||
| import java.nio.file.NotDirectoryException; | ||
| import java.util.List; | ||
|
|
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| /** | ||
| * Controller for the Semviz Query Manager. | ||
| */ | ||
| public final class SQMController extends Controller { | ||
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| private static SQMController instance = null; | ||
| private final SQM sqm; // the unique instance of the Semviz Query Manager | ||
| private List<SemanticCloudDescription> descriptions; // the list of current query results | ||
| private int selectedDescriptionIndex; // the currently selected Description | ||
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| private SQMController() { | ||
| sqm = SQM.getInstance(); | ||
| selectedDescriptionIndex = -1; | ||
| } | ||
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| public static SQMController getInstance() { | ||
| if (instance == null) { | ||
| instance = new SQMController(); | ||
| } | ||
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| return instance; | ||
| } | ||
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| /** | ||
| * @return the currently selected description | ||
| */ | ||
| public SemanticCloudDescription getSelectedDescription() { | ||
| if (selectedDescriptionIndex > -1 | ||
| && selectedDescriptionIndex < descriptions.size()) { | ||
| return descriptions.get(selectedDescriptionIndex); | ||
| } | ||
|
|
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| return null; | ||
| } | ||
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| /** | ||
| * Given a Semviz directory, this method loads a Semviz directory into the | ||
| * Semviz query manager singleton. | ||
| * | ||
| * @param path is the path to the Semviz directory | ||
| */ | ||
| public void load(String path) { | ||
| if (descriptions != null) { | ||
| descriptions.clear(); | ||
| } | ||
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| try { | ||
| sqm.load(path); | ||
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| changeSupport.firePropertyChange("SQMLoadSuccess", null, sqm); | ||
| } catch (InvalidDirectoryException | NotDirectoryException | FileNotFoundException e) { | ||
| changeSupport.firePropertyChange("SQMLoadError", null, e.getMessage()); | ||
| } | ||
| } | ||
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| /** | ||
| * Executes a query on the currently loaded Semviz directory. | ||
| * | ||
| * @param queryString is the string of the query to be executed | ||
| */ | ||
| public void exec(String queryString) { | ||
| List<SemanticCloudDescription> prevDescriptions = descriptions; | ||
|
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| try { | ||
| changeSupport.firePropertyChange("SQMExecutionStarted", null, sqm); | ||
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| descriptions = sqm.exec(queryString); | ||
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| changeSupport.firePropertyChange("SQMFailCountChanged", null, sqm.getFailCount()); | ||
| changeSupport.firePropertyChange("SQMExecutionSuccess", prevDescriptions, descriptions); | ||
| } catch (Exception e) { | ||
| changeSupport.firePropertyChange("SQMExecutionError", null, e.getMessage()); | ||
| } | ||
| } | ||
|
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| /** | ||
| * Sets the selected semantic cloud description index. | ||
| * | ||
| * @param i is the index of the selected description | ||
| */ | ||
| public void setSelectedDescriptionIndex(int i) { | ||
| int prev = selectedDescriptionIndex; | ||
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| selectedDescriptionIndex = i; | ||
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| changeSupport.firePropertyChange("SQMDescriptionIndexChanged", prev, | ||
| selectedDescriptionIndex); | ||
| } | ||
|
|
||
| } |
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