cleanups as suggested by errorprone (#7088)

Author: DaanHoogland

PULL_REQUEST_TEMPLATE.md

@@ -22,6 +22,7 @@ This PR...
 - [ ] Bug fix (non-breaking change which fixes an issue)
 - [ ] Enhancement (improves an existing feature and functionality)
 - [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
+- [ ] build/CI
 
 ### Feature/Enhancement Scale or Bug Severity
 

framework/config/src/main/java/org/apache/cloudstack/framework/config/ConfigKey.java

@@ -149,7 +149,7 @@ public ConfigKey(Class<T> type, String name, String category, String defaultValu
 
     public ConfigKey(Class<T> type, String name, String category, String defaultValue, String description, boolean isDynamic, Scope scope, T multiplier,
                      String displayText, String parent, Ternary<String, String, Long> group, Pair<String, Long> subGroup) {
-        this(type, name, category, defaultValue, description, isDynamic, scope, multiplier, null, parent, null, null, null, null);
+        this(type, name, category, defaultValue, description, isDynamic, scope, multiplier, displayText, parent, group, subGroup, null, null);
     }
 
     public ConfigKey(Class<T> type, String name, String category, String defaultValue, String description, boolean isDynamic, Scope scope, T multiplier,

framework/config/src/test/java/org/apache/cloudstack/framework/config/impl/ConfigDepotAdminTest.java

@@ -98,13 +98,17 @@ public void testAutoPopulation() {
         ConfigurationVO staticIntCV = new ConfigurationVO("UnitTestComponent", StaticIntCK);
         dynamicIntCV.setValue("200");
         ConfigurationVO testCV = new ConfigurationVO("UnitTestComponent", TestCK);
+        ConfigurationGroupVO groupVO = new ConfigurationGroupVO();
+        ConfigurationSubGroupVO subGroupVO = new ConfigurationSubGroupVO();
 
         when(_configurable.getConfigComponentName()).thenReturn("UnitTestComponent");
         when(_configurable.getConfigKeys()).thenReturn(new ConfigKey<?>[] {DynamicIntCK, StaticIntCK, TestCK});
         when(_configDao.findById(StaticIntCK.key())).thenReturn(null);
         when(_configDao.findById(DynamicIntCK.key())).thenReturn(dynamicIntCV);
         when(_configDao.findById(TestCK.key())).thenReturn(testCV);
         when(_configDao.persist(any(ConfigurationVO.class))).thenReturn(dynamicIntCV);
+        when(_configGroupDao.persist(any(ConfigurationGroupVO.class))).thenReturn(groupVO);
+        when(_configSubGroupDao.persist(any(ConfigurationSubGroupVO.class))).thenReturn(subGroupVO);
         _depotAdmin.populateConfigurations();
 
         // This is once because DynamicIntCK is returned.

framework/db/src/main/java/com/cloud/dao/EntityManagerImpl.java

@@ -86,7 +86,7 @@ public <T> SearchBuilder<T> createSearchBuilder(Class<T> entityType) {
 
     public <T, K> GenericSearchBuilder<T, K> createGenericSearchBuilder(Class<T> entityType, Class<K> resultType) {
         GenericDao<T, ? extends Serializable> dao = (GenericDao<T, ? extends Serializable>)GenericDaoBase.getDao(entityType);
-        return dao.createSearchBuilder((Class<K>)resultType.getClass());
+        return dao.createSearchBuilder((Class<K>)resultType);
     }
 
     @Override

framework/db/src/main/java/com/cloud/utils/db/DbUtil.java

@@ -124,7 +124,7 @@ public static PrimaryKeyJoinColumn[] getPrimaryKeyJoinColumns(Class<?> clazz) {
     public static Field findField(Class<?> clazz, String columnName) {
         for (Field field : clazz.getDeclaredFields()) {
             if (field.getAnnotation(Embedded.class) != null || field.getAnnotation(EmbeddedId.class) != null) {
-                findField(field.getClass(), columnName);
+                findField(field.getType(), columnName);
             } else {
                 if (columnName.equals(DbUtil.getColumnName(field))) {
                     return field;
@@ -170,7 +170,7 @@ public static final boolean isIdField(Field field) {
         }
 
         if (field.getAnnotation(EmbeddedId.class) != null) {
-            assert (field.getClass().getAnnotation(Embeddable.class) != null) : "Class " + field.getClass().getName() + " must be Embeddable to be used as Embedded Id";
+            assert (field.getType().getAnnotation(Embeddable.class) != null) : "Class " + field.getType().getName() + " must be Embeddable to be used as Embedded Id";
             return true;
         }
 

framework/db/src/main/java/com/cloud/utils/db/DriverLoader.java

@@ -16,6 +16,8 @@
 // under the License.
 package com.cloud.utils.db;
 
+import java.lang.reflect.InvocationTargetException;
+import java.sql.Driver;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -56,12 +58,13 @@ public static void loadDriver(String dbDriver) {
         }
 
         try {
-            Class.forName(driverClass).newInstance();
+            Class<Driver> klazz = (Class<Driver>) Class.forName(driverClass);
+            klazz.getDeclaredConstructor().newInstance();
             LOADED_DRIVERS.add(dbDriver);
             if (LOGGER.isDebugEnabled()) {
                 LOGGER.debug("Successfully loaded DB driver " + driverClass);
             }
-        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException e) {
+        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
             LOGGER.error("Failed to load DB driver " + driverClass);
             throw new CloudRuntimeException("Failed to load DB driver " + driverClass, e);
         }

framework/db/src/main/java/com/cloud/utils/db/EcInfo.java

@@ -57,10 +57,10 @@ public EcInfo(Attribute attr, Attribute idAttr) {
                     rawClass = HashSet.class;
                 } else if (List.class == rawClazz) {
                     rawClass = ArrayList.class;
-                } else if (Collection.class == Collection.class) {
+                } else if (Collection.class == rawClazz) {
                     rawClass = ArrayList.class;
                 } else {
-                    assert (false) : " We don't know how to create this calss " + rawType.toString() + " for " + attr.field.getName();
+                    assert (false) : " We don't know how to create this class " + rawType.toString() + " for " + attr.field.getName();
                 }
             } catch (NoSuchMethodException e) {
                 throw new CloudRuntimeException("Write your own support for " + rawClazz + " defined by " + attr.field.getName());

framework/db/src/main/java/com/cloud/utils/db/GenericDaoBase.java

@@ -874,7 +874,8 @@ protected String buildSelectByIdSql(final StringBuilder sql) {
         if (_idField.getAnnotation(EmbeddedId.class) == null) {
             sql.append(_table).append(".").append(DbUtil.getColumnName(_idField, null)).append(" = ? ");
         } else {
-            final Class<?> clazz = _idField.getClass();
+            s_logger.debug(String.format("field type vs declarator : %s vs %s", _idField.getType(), _idField.getDeclaringClass()));
+            final Class<?> clazz = _idField.getType();
             final AttributeOverride[] overrides = DbUtil.getAttributeOverrides(_idField);
             for (final Field field : clazz.getDeclaredFields()) {
                 sql.append(_table).append(".").append(DbUtil.getColumnName(field, overrides)).append(" = ? AND ");

utils/src/main/java/com/cloud/utils/SerialVersionUID.java

@@ -23,7 +23,7 @@
  * purposes.  This is purely on an honor system though.  You should always
  **/
 public interface SerialVersionUID {
-    public static final long Base = 0x564D4F70 << 32;  // 100 brownie points if you guess what this is and tell me.
+    public static final long Base = 0x564D4F70L << 32;  // 100 brownie points if you guess what this is and tell me.
 
     public static final long UUID = Base | 0x1;
     public static final long CloudRuntimeException = Base | 0x2;

utils/src/main/java/com/cloud/utils/events/SubscriptionMgr.java

@@ -25,6 +25,7 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 import org.apache.log4j.Logger;
 
@@ -160,5 +161,10 @@ public boolean equals(Object o) {
             }
             return false;
         }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(this.clazz, this.subscriber, this.methodName, this.method);
+        }
     }
 }