Improve type safety (#1531)

.gitignore

@@ -5,3 +5,4 @@ meta.log
 build.log
 /updates/
 /workspace/
+/data/org.eclipse.birt.report.data.oda.jdbc/drivers/*.jar

chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ReportDataServiceProvider.java

@@ -455,7 +455,6 @@ private void removeIndirectRefOfAggregates(List<ComputedColumnHandle> list,
 	 * @return
 	 * @throws BirtException
 	 */
-	@SuppressWarnings("unchecked")
 	private boolean isCommonBinding(ComputedColumnHandle cch, Map<String, ComputedColumnHandle> bindingMap)
 			throws BirtException {
 		ScriptExpression se = ChartReportItemUtil.newExpression(session.getModelAdaptor(), cch);
@@ -674,7 +673,7 @@ protected boolean isLibraryHandle() {
 	 * @param queryDefn        query definition.
 	 * @param reportItemHandle the item handle contains groups.
 	 */
-	@SuppressWarnings({ "unchecked" })
+	@SuppressWarnings({})
 	private void handleGroup(QueryDefinition queryDefn, ExtendedItemHandle reportItemHandle,
 			IModelAdapter modelAdapter) {
 		ReportItemHandle handle = ChartReportItemUtil.getBindingHolder(reportItemHandle);
@@ -796,7 +795,6 @@ protected boolean isInMultiView() {
 	 *
 	 * @return data set name
 	 */
-	@SuppressWarnings("unchecked")
 	String getInheritedDataSet() {
 		List<DataSetHandle> list = DEUtil.getDataSetList(itemHandle.getContainer());
 		if (list.size() > 0) {
@@ -908,7 +906,6 @@ protected List<ComputedColumn> generateComputedColumns(DataSetHandle dataSetHand
 	 *
 	 * @return direct dataset
 	 */
-	@SuppressWarnings("unchecked")
 	protected DataSetHandle getDataSetFromHandle() {
 		DataSetHandle handle = ChartReportItemHelper.instance().getBindingDataSetHandle(itemHandle);
 		if (handle != null) {
@@ -1129,7 +1126,6 @@ public DataType getDataType(String expression) {
 		return ChartItemUtil.getExpressionDataType(expression, itemHandle);
 	}
 
-	@SuppressWarnings("unchecked")
 	protected String[] getAllReportItemReferences() {
 		List<ReportItemHandle> availableList = itemHandle.getAvailableDataBindingReferenceList();
 		List<ReportItemHandle> referenceList = new ArrayList<>();
@@ -1353,10 +1349,9 @@ protected IDataRowExpressionEvaluator createBaseEvaluator(ExtendedItemHandle han
 			if (actualResultSet != null) {
 				if (ChartReportItemUtil.isOldChartUsingInternalGroup(itemHandle, cm)) {
 					return createSimpleExpressionEvaluator(actualResultSet);
-				} else {
-					return new BaseGroupedQueryResultSetEvaluator(actualResultSet.getResultIterator(),
-							ChartReportItemUtil.isSetSummaryAggregation(cm), cm, itemHandle);
 				}
+				return new BaseGroupedQueryResultSetEvaluator(actualResultSet.getResultIterator(),
+						ChartReportItemUtil.isSetSummaryAggregation(cm), cm, itemHandle);
 			}
 		} catch (BirtException e) {
 			throw new ChartException(ChartReportItemUIActivator.ID, ChartException.DATA_BINDING, e);
@@ -1576,7 +1571,6 @@ private Iterator<FilterConditionHandle> getFiltersIterator() {
 	 * @return
 	 * @throws BirtException
 	 */
-	@SuppressWarnings("unchecked")
 	protected IDataRowExpressionEvaluator createCubeEvaluator(CubeHandle cube, final Chart cm,
 			List<String> columnExpression) throws BirtException {
 		// Use the chart model in context, because this model will be updated
@@ -1607,9 +1601,9 @@ protected IDataRowExpressionEvaluator createCubeEvaluator(CubeHandle cube, final
 
 			// Generates a set of available binding names.
 			Set<String> bindingNames = new HashSet<>();
-			List<Object> bindings = queryDef.getBindings();
+			List<IBinding> bindings = queryDef.getBindings();
 			for (int i = 0; i < bindings.size(); i++) {
-				bindingNames.add(((Binding) bindings.get(i)).getBindingName());
+				bindingNames.add(bindings.get(i).getBindingName());
 			}
 
 			ExpressionSet exprSet = new ExpressionSet();
@@ -2206,9 +2200,8 @@ public Object evaluate(String expression) {
 							String newExpr = bindingExprsMap.get(expression);
 							if (newExpr != null) {
 								return fResultIterator.getValue(newExpr);
-							} else {
-								return fResultIterator.getValue(expression);
 							}
+							return fResultIterator.getValue(expression);
 						} catch (BirtException e) {
 							sLogger.log(e);
 						}
@@ -2376,7 +2369,6 @@ private final ColumnBindingInfo[] getPreviewHeadersInfo(List<ComputedColumnHandl
 		 *
 		 * @return
 		 */
-		@SuppressWarnings("unchecked")
 		private List<GroupHandle> getGroupsOfSharedBinding() {
 			List<GroupHandle> groupList = new ArrayList<>();
 			ListingHandle table = null;
@@ -3028,9 +3020,8 @@ boolean isSharingChart(boolean isRecursive) {
 		boolean isShare = isSharedBinding();
 		if (isRecursive) {
 			return isShare && isChartReportItemHandle(ChartReportItemUtil.getReportItemReference(itemHandle));
-		} else {
-			return isShare && isChartReportItemHandle(itemHandle.getDataBindingReference());
 		}
+		return isShare && isChartReportItemHandle(itemHandle.getDataBindingReference());
 	}
 
 	/**

chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/AbstractChartBaseQueryGenerator.java

@@ -144,7 +144,7 @@ public AbstractChartBaseQueryGenerator(ReportItemHandle handle, Chart cm, boolea
 	 * @param baseSD
 	 * @throws ChartException
 	 */
-	@SuppressWarnings({ "unchecked", "deprecation" })
+	@SuppressWarnings("deprecation")
 	protected void addValueSeriesAggregateBindingForGrouping(BaseQueryDefinition query,
 			EList<SeriesDefinition> seriesDefinitions, GroupDefinition innerMostGroupDef,
 			Map<String, String[]> valueExprMap, SeriesDefinition baseSD) throws ChartException {
@@ -241,11 +241,11 @@ protected void addValueSeriesAggregateBindingForGrouping(BaseQueryDefinition que
 								newBinding.setExportable(colBinding.exportable());
 								newBinding.setFilter(colBinding.getFilter());
 								newBinding.setTimeFunction(colBinding.getTimeFunction());
-								for (Object o : colBinding.getAggregatOns()) {
-									newBinding.getAggregatOns().add(o);
+								for (String s : colBinding.getAggregatOns()) {
+									newBinding.getAggregatOns().add(s);
 								}
-								for (Object o : colBinding.getArguments()) {
-									newBinding.addArgument((IBaseExpression) o);
+								for (IBaseExpression arg : colBinding.getArguments()) {
+									newBinding.addArgument(arg);
 								}
 
 								query.addBinding(newBinding);

chart/org.eclipse.birt.chart.reportitem/src/org/eclipse/birt/chart/reportitem/ChartReportItemUtil.java

@@ -49,10 +49,10 @@
 import org.eclipse.birt.data.engine.api.IBaseExpression;
 import org.eclipse.birt.data.engine.api.IBaseQueryDefinition;
 import org.eclipse.birt.data.engine.api.IBinding;
+import org.eclipse.birt.data.engine.api.IGroupDefinition;
 import org.eclipse.birt.data.engine.api.IScriptExpression;
 import org.eclipse.birt.data.engine.api.ISubqueryDefinition;
 import org.eclipse.birt.data.engine.api.querydefn.Binding;
-import org.eclipse.birt.data.engine.api.querydefn.GroupDefinition;
 import org.eclipse.birt.data.engine.api.querydefn.ScriptExpression;
 import org.eclipse.birt.data.engine.api.querydefn.SubqueryDefinition;
 import org.eclipse.birt.data.engine.core.DataException;
@@ -345,7 +345,7 @@ public static void copyAndInsertBindingFromContainer(ISubqueryDefinition query,
 					binding.addAggregateOn(aggregateOn);
 					// Copy groups if used and not added previously
 					if (findGroupInQuery(query, aggregateOn) == null) {
-						GroupDefinition group = findGroupInQuery(query.getParentQuery(), aggregateOn);
+						IGroupDefinition group = findGroupInQuery(query.getParentQuery(), aggregateOn);
 						if (group != null) {
 							((SubqueryDefinition) query).addGroup(group);
 						}
@@ -365,10 +365,10 @@ public static void copyAndInsertBindingFromContainer(ISubqueryDefinition query,
 	}
 
 	@SuppressWarnings("unchecked")
-	private static GroupDefinition findGroupInQuery(IBaseQueryDefinition query, String groupName) {
-		List<GroupDefinition> groups = query.getGroups();
+	private static IGroupDefinition findGroupInQuery(IBaseQueryDefinition query, String groupName) {
+		List<IGroupDefinition> groups = query.getGroups();
 		if (groups != null) {
-			for (GroupDefinition group : groups) {
+			for (IGroupDefinition group : groups) {
 				if (group.getName().equals(groupName)) {
 					return group;
 				}

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/DataEngineContext.java

@@ -27,7 +27,6 @@
 import org.eclipse.birt.core.exception.BirtException;
 import org.eclipse.birt.core.script.ScriptContext;
 import org.eclipse.birt.data.engine.core.DataException;
-import org.eclipse.birt.data.engine.core.security.PropertySecurity;
 import org.eclipse.birt.data.engine.i18n.ResourceConstants;
 import org.mozilla.javascript.Scriptable;
 
@@ -103,7 +102,7 @@ public enum DataEngineFlowMode {
 	private int cacheOption;
 	private int cacheCount;
 
-	private String tmpDir = PropertySecurity.getSystemProperty("java.io.tmpdir"); //$NON-NLS-1$
+	private String tmpDir = System.getProperty("java.io.tmpdir"); //$NON-NLS-1$
 	private ClassLoader classLoader;
 
 	/** stream id for internal use, don't use it externally */
@@ -398,9 +397,8 @@ public boolean hasOutStream(String streamID, String subStreamID, int streamType)
 
 		if (writer != null) {
 			return writer.exists(relativePath);
-		} else {
-			return false;
 		}
+		return false;
 	}
 
 	/**

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/IBaseDataSetDesign.java

@@ -72,7 +72,7 @@ public interface IBaseDataSetDesign {
 	 *
 	 * @return the computed columns. An empty list if none is defined.
 	 */
-	List getComputedColumns();
+	List<IComputedColumn> getComputedColumns();
 
 	/**
 	 * Returns a list of filters. The List contains
@@ -81,7 +81,7 @@ public interface IBaseDataSetDesign {
 	 *
 	 * @return the filters. An empty list if none is defined.
 	 */
-	List getFilters();
+	List<IFilterDefinition> getFilters();
 
 	/**
 	 * Get a list of sort hints.
@@ -99,7 +99,7 @@ public interface IBaseDataSetDesign {
 	 *
 	 * @return the parameter definitions. An empty list if none is defined.
 	 */
-	List getParameters();
+	List<IParameterDefinition> getParameters();
 
 	/**
 	 * Returns the primary result set hints as a list of
@@ -110,15 +110,15 @@ public interface IBaseDataSetDesign {
 	 *         the data set can provide the definition from the underlying data
 	 *         access provider.
 	 */
-	List getResultSetHints();
+	List<IColumnDefinition> getResultSetHints();
 
 	/**
 	 * Returns the set of input parameter bindings as an unordered collection of
 	 * {@link org.eclipse.birt.data.engine.api.IInputParameterBinding} objects.
 	 *
 	 * @return the input parameter bindings. An empty collection if none is defined.
 	 */
-	Collection getInputParamBindings();
+	Collection<IInputParameterBinding> getInputParamBindings();
 
 	/**
 	 * Returns the <code>beforeOpen</code> script to be called just before opening

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/IBaseQueryDefinition.java

@@ -35,7 +35,7 @@ public interface IBaseQueryDefinition extends IBaseTransform, IDataQueryDefiniti
 	 * @return the list of groups. If no group is defined, null is returned.
 	 */
 
-	List getGroups();
+	List<IGroupDefinition> getGroups();
 
 	/**
 	 * Indicates if the report will use the detail rows. Allows the data engine to

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/IBaseTransform.java

@@ -31,7 +31,7 @@ public interface IBaseTransform {
 	 *
 	 * @return the filters. null if no filter is defined.
 	 */
-	List getFilters();
+	List<IFilterDefinition> getFilters();
 
 	/**
 	 * Returns an unordered collection of subqueries that are alternative views of
@@ -42,14 +42,14 @@ public interface IBaseTransform {
 	 * @see ISubqueryDefinition
 	 */
 
-	Collection getSubqueries();
+	Collection<ISubqueryDefinition> getSubqueries();
 
 	/**
 	 * Returns the sort criteria as an ordered list of
 	 * {@link org.eclipse.birt.data.engine.api.ISortDefinition} objects.
 	 *
 	 * @return the sort criteria
 	 */
-	List getSorts();
+	List<ISortDefinition> getSorts();
 
 }

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/IBinding.java

@@ -1,12 +1,12 @@
 /*******************************************************************************
  * Copyright (c) 2004, 2005 Actuate Corporation.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License 2.0 which is available at
  * https://www.eclipse.org/legal/epl-2.0/.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0
- * 
+ *
  *
  * Contributors:
  *  Actuate Corporation  - initial API and implementation
@@ -72,7 +72,7 @@ public interface IBinding {
 	 * @return
 	 * @throws DataException
 	 */
-	List getAggregatOns() throws DataException;
+	List<String> getAggregatOns() throws DataException;
 
 	/**
 	 * Add aggregate on to the binding.
@@ -89,7 +89,7 @@ public interface IBinding {
 	 * @return
 	 * @throws DataException
 	 */
-	List getArguments() throws DataException;
+	List<IBaseExpression> getArguments() throws DataException;
 
 	/**
 	 * Imply whether the data of this binding should be candidate for data

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/IExpressionCollection.java

@@ -25,5 +25,5 @@ public interface IExpressionCollection extends IBaseExpression {
 	/**
 	 * Gets the expression collection.
 	 */
-	Collection getExpressions();
+	Collection<IBaseExpression> getExpressions();
 }

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/querydefn/BaseQueryDefinition.java

@@ -26,6 +26,7 @@
 import org.eclipse.birt.data.engine.api.IBaseQueryDefinition;
 import org.eclipse.birt.data.engine.api.IBinding;
 import org.eclipse.birt.data.engine.api.IDataQueryDefinition;
+import org.eclipse.birt.data.engine.api.IGroupDefinition;
 import org.eclipse.birt.data.engine.api.IQueryDefinition;
 import org.eclipse.birt.data.engine.api.IQueryExecutionHints;
 import org.eclipse.birt.data.engine.core.DataException;
@@ -92,7 +93,7 @@ public List getGroups() {
 	 *
 	 * @param group Group definition to add
 	 */
-	public void addGroup(GroupDefinition group) {
+	public void addGroup(IGroupDefinition group) {
 		groups.add(group);
 	}
 

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/querydefn/Binding.java

@@ -127,7 +127,7 @@ public String getAggrFunction() {
 	 * @see org.eclipse.birt.data.engine.api.IBinding#getAggregatOns()
 	 */
 	@Override
-	public List getAggregatOns() {
+	public List<String> getAggregatOns() {
 		return this.aggregateOn;
 	}
 
@@ -137,7 +137,7 @@ public List getAggregatOns() {
 	 * @see org.eclipse.birt.data.engine.api.IBinding#getArguments()
 	 */
 	@Override
-	public List getArguments() throws DataException {
+	public List<IBaseExpression> getArguments() throws DataException {
 		if (this.orderedArgument != null) {
 			// ordered list already computed;
 			return this.orderedArgument;

data/org.eclipse.birt.data/src/org/eclipse/birt/data/engine/api/script/IDataSetInstanceHandle.java

@@ -91,7 +91,7 @@ public interface IDataSetInstanceHandle extends IJavascriptContext {
 	 * @return Extension properties as a Map of String->String pairs. Null if no
 	 *         extension property is defined
 	 */
-	Map getAllExtensionProperties();
+	Map<String, String> getAllExtensionProperties();
 
 	/**
 	 * Gets the current value of the named data set input parameter.