Fixes for null pointer error when compiling into eclipse (#5414)

Signed-off-by: Laurent ARNAL <laurent@clae.net>

bundles/org.openhab.core.config.core/src/main/java/org/openhab/core/config/core/ConfigUtil.java

@@ -263,6 +263,10 @@ public class ConfigUtil {
             final List<Object> lst = new ArrayList<>(collection.size());
             for (final Object it : collection) {
                 final Object normalized = normalizeType(it, null);
+                if (normalized == null) {
+                    continue;
+                }
+
                 lst.add(normalized);
                 if (normalized.getClass() != lst.getFirst().getClass()) {
                     throw new IllegalArgumentException(

bundles/org.openhab.core.config.core/src/main/java/org/openhab/core/config/core/internal/validation/MinMaxValidator.java

@@ -49,20 +49,16 @@ final class MinMaxValidator implements ConfigDescriptionParameterValidator {
         }
 
         TypeIntrospection typeIntrospection = TypeIntrospections.get(parameter.getType());
-        if (parameter.getMinimum() != null) {
         BigDecimal min = parameter.getMinimum();
-            if (typeIntrospection.isMinViolated(value, min)) {
+        if (min != null && typeIntrospection.isMinViolated(value, min)) {
             return createMinMaxViolationMessage(parameter.getName(), typeIntrospection.getMinViolationMessageKey(),
                     min);
         }
-        }
-        if (parameter.getMaximum() != null) {
         BigDecimal max = parameter.getMaximum();
-            if (typeIntrospection.isMaxViolated(value, max)) {
+        if (max != null && typeIntrospection.isMaxViolated(value, max)) {
             return createMinMaxViolationMessage(parameter.getName(), typeIntrospection.getMaxViolationMessageKey(),
                     max);
         }
-        }
         return null;
     }
 

bundles/org.openhab.core.model.item/src/org/openhab/core/model/item/internal/GenericItemProvider.java

@@ -556,8 +556,11 @@ public class GenericItemProvider extends AbstractProvider<Item>
         };
 
         Item baseItem = createItemOfType(baseItemType, modelItem.getName());
+        if (baseItem != null) {
             return applyGroupFunction(baseItem, modelItem, function);
         }
+        return null;
+    }
 
     /**
      * Creates a new item of type {@code itemType} by utilizing an appropriate {@link ItemFactory}.

bundles/org.openhab.core.thing/src/main/java/org/openhab/core/thing/DefaultSystemChannelTypeProvider.java

@@ -437,9 +437,14 @@ public class DefaultSystemChannelTypeProvider implements ChannelTypeProvider {
         final List<ChannelType> allChannelTypes = new ArrayList<>();
         final Bundle bundle = bundleResolver.resolveBundle(DefaultSystemChannelTypeProvider.class);
 
+        if (bundle == null) {
+            throw new IllegalArgumentException("bundle==null in DefaultSystemChannelTypeProvider::getChannelTypes");
+        }
+
         for (final ChannelType channelType : CHANNEL_TYPES) {
             allChannelTypes.add(createLocalizedChannelType(bundle, channelType, locale));
         }
+
         return allChannelTypes;
     }
 
@@ -447,11 +452,16 @@ public class DefaultSystemChannelTypeProvider implements ChannelTypeProvider {
     public @Nullable ChannelType getChannelType(ChannelTypeUID channelTypeUID, @Nullable Locale locale) {
         final Bundle bundle = bundleResolver.resolveBundle(DefaultSystemChannelTypeProvider.class);
 
+        if (bundle == null) {
+            throw new IllegalArgumentException("bundle==null in DefaultSystemChannelTypeProvider::getChannelType");
+        }
+
         for (final ChannelType channelType : CHANNEL_TYPES) {
             if (channelTypeUID.equals(channelType.getUID())) {
                 return createLocalizedChannelType(bundle, channelType, locale);
             }
         }
+
         return null;
     }
 

bundles/org.openhab.core.thing/src/main/java/org/openhab/core/thing/internal/ThingImpl.java

@@ -214,10 +214,8 @@ public class ThingImpl implements Thing {
             throw new IllegalArgumentException("Property name must not be null or empty");
         }
         synchronized (this) {
-            if (value == null) {
-                return properties.remove(name);
-            }
-            return properties.put(name, value);
+            String val = value;
+            return val == null ? properties.remove(name) : properties.put(name, val);
         }
     }
 

bundles/org.openhab.core.thing/src/test/java/org/openhab/core/thing/internal/ChannelStateDescriptionProviderTest.java

@@ -81,6 +81,7 @@ public class ChannelStateDescriptionProviderTest {
 
         ChannelType channelType1 = Mockito.mock(ChannelType.class);
 
+        assertNotNull(stateDescription1);
         when(channelType1.getState()).thenReturn(stateDescription1);
         when(thingTypeRegistry.getChannelType(channel1, Locale.ENGLISH)).thenReturn(channelType1);
         when(dynamicStateDescriptionProvider.getStateDescription(channel1, stateDescription1, Locale.ENGLISH))
@@ -93,6 +94,8 @@ public class ChannelStateDescriptionProviderTest {
                 .withMaximum(new BigDecimal(100)).withStep(BigDecimal.ONE).withReadOnly(channel2State).withPattern("%s")
                 .build().toStateDescription();
         ChannelType channelType2 = Mockito.mock(ChannelType.class);
+        assertNotNull(stateDescription2);
+
         when(channelType2.getState()).thenReturn(stateDescription2);
         when(thingTypeRegistry.getChannelType(channel2, Locale.ENGLISH)).thenReturn(channelType2);
         when(dynamicStateDescriptionProvider.getStateDescription(channel2, stateDescription2, Locale.ENGLISH))
@@ -117,6 +120,8 @@ public class ChannelStateDescriptionProviderTest {
                 .withMaximum(new BigDecimal(100)).withStep(BigDecimal.ONE).withReadOnly(Boolean.TRUE).withPattern("%s")
                 .build().toStateDescription();
         ChannelType channelType = Mockito.mock(ChannelType.class);
+
+        assertNotNull(stateDescription1);
         when(channelType.getState()).thenReturn(stateDescription1);
         when(thingTypeRegistry.getChannelType(channel1, Locale.ENGLISH)).thenReturn(channelType);
 
@@ -142,6 +147,8 @@ public class ChannelStateDescriptionProviderTest {
                 .withMaximum(new BigDecimal(100)).withStep(BigDecimal.ONE).withReadOnly(Boolean.FALSE).withPattern("%s")
                 .build().toStateDescription();
         ChannelType channelType = Mockito.mock(ChannelType.class);
+
+        assertNotNull(stateDescription1);
         when(channelType.getState()).thenReturn(stateDescription1);
         when(thingTypeRegistry.getChannelType(channel1, Locale.ENGLISH)).thenReturn(channelType);