Fix checkstyle violations in sdc-main/common

Change-Id: I3e132cf4bffd77f9910bf6eff2026c3267873b11
Issue-ID: SDC-2454
Signed-off-by: michal.banka <michal.banka@nokia.com>

4 files changed, 31 insertions, 23 deletions

diff --git a/common/onap-common-configuration-management/onap-configuration-management-api/src/main/java/org/onap/config/api/ConfigurationLoader.java b/common/onap-common-configuration-management/onap-configuration-management-api/src/main/java/org/onap/config/api/ConfigurationLoader.java
index d84a470e1c..8d61701a9c 100644
--- a/common/onap-common-configuration-management/onap-configuration-management-api/src/main/java/org/onap/config/api/ConfigurationLoader.java
+++ b/common/onap-common-configuration-management/onap-configuration-management-api/src/main/java/org/onap/config/api/ConfigurationLoader.java
@@ -27,6 +27,9 @@ import java.util.ServiceLoader;
  */
 class ConfigurationLoader {
 
+    private ConfigurationLoader() {
+    }
+
     static Configuration load() {
 
         ServiceLoader<ConfigurationManager> loader = ServiceLoader.load(ConfigurationManager.class);
diff --git a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/ConfigurationUtils.java b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/ConfigurationUtils.java
index b18649181d..991ec5fc8b 100644
--- a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/ConfigurationUtils.java
+++ b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/ConfigurationUtils.java
@@ -433,12 +433,13 @@ public class ConfigurationUtils {
         Pattern pattern = Pattern.compile("^.*\\$\\{(.*)\\}.*");
         Matcher matcher = pattern.matcher(data);
         if (matcher.matches()) {
+            final int substringStartIndex = 4;
             String key = matcher.group(1);
             String value;
             if (key.toUpperCase().startsWith("ENV:")) {
-                value = System.getenv(key.substring(4));
+                value = System.getenv(key.substring(substringStartIndex));
             } else if (key.toUpperCase().startsWith("SYS:")) {
-                value = System.getProperty(key.substring(4));
+                value = System.getProperty(key.substring(substringStartIndex));
             } else {
                 value = ConfigurationUtils.getCollectionString(
                         ConfigurationManager.lookup().getAsStringValues(tenant, namespace, key).toString());
@@ -513,8 +514,8 @@ public class ConfigurationUtils {
         if (List.class.isAssignableFrom(clazz)) {
             return getConcreteCollection(List.class);
         }
-        throw new IllegalArgumentException("Only corresponding array classes and any are allowed as argument." +
-                "assignable from TransferQueue, BlockingQueue, Deque, Queue, SortedSet, Set, List class");
+        throw new IllegalArgumentException("Only corresponding array classes and any are allowed as argument."
+                + "assignable from TransferQueue, BlockingQueue, Deque, Queue, SortedSet, Set, List class");
     }
 
     public static Collection getConcreteCollection(Class clazz) {
@@ -535,8 +536,8 @@ public class ConfigurationUtils {
             case "java.util.concurrent.BlockingQueue":
                 return new LinkedBlockingQueue<>();
             default:
-                throw new IllegalArgumentException("Only corresponding array classes and any are allowed as argument." +
-                        "assignable from TransferQueue, BlockingQueue, Deque, Queue, SortedSet, Set, List class");
+                throw new IllegalArgumentException("Only corresponding array classes and any are allowed as argument."
+                        + "assignable from TransferQueue, BlockingQueue, Deque, Queue, SortedSet, Set, List class");
         }
     }
 
diff --git a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationImpl.java b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationImpl.java
index 6cad62ef03..9a3fbd26fb 100644
--- a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationImpl.java
+++ b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationImpl.java
@@ -44,7 +44,7 @@ public class ConfigurationImpl implements org.onap.config.api.Configuration {
 
     private static final String KEY_CANNOT_BE_NULL = "Key can't be null.";
 
-    private static final NonConfigResource nonConfigResource = new NonConfigResource();
+    private static final NonConfigResource NON_CONFIG_RESOURCE = new NonConfigResource();
 
     static {
 
@@ -70,7 +70,7 @@ public class ConfigurationImpl implements org.onap.config.api.Configuration {
                 }
                 moduleConfig.addConfig(url);
             } else {
-                nonConfigResource.add(url);
+                NON_CONFIG_RESOURCE.add(url);
             }
         }
         String configLocation = System.getProperty("config.location");
@@ -88,7 +88,7 @@ public class ConfigurationImpl implements org.onap.config.api.Configuration {
                     }
                     moduleConfig.addConfig(file);
                 } else {
-                    nonConfigResource.add(file);
+                    NON_CONFIG_RESOURCE.add(file);
                 }
             }
         }
@@ -397,13 +397,17 @@ public class ConfigurationImpl implements org.onap.config.api.Configuration {
                             clazzToInstantiate = field.getType();
                         }
                         Constructor construct = getConstructorWithArguments(clazzToInstantiate, Collection.class);
+
                         if (construct != null) {
                             construct.setAccessible(true);
                             field.set(objToReturn, construct.newInstance(list));
-                        } else if ((construct = getConstructorWithArguments(clazzToInstantiate, Integer.class,
-                                Boolean.class, Collection.class)) != null) {
-                            construct.setAccessible(true);
-                            field.set(objToReturn, construct.newInstance(list.size(), true, list));
+                        } else {
+                            construct = getConstructorWithArguments(clazzToInstantiate, Integer.class,
+                                    Boolean.class, Collection.class);
+                            if (construct != null) {
+                                construct.setAccessible(true);
+                                field.set(objToReturn, construct.newInstance(list.size(), true, list));
+                            }
                         }
                     }
                 } else if (Map.class.isAssignableFrom(field.getType())) {
@@ -454,7 +458,7 @@ public class ConfigurationImpl implements org.onap.config.api.Configuration {
         if (String.class.equals(clazz)) {
             if (obj.toString().startsWith("@") && ConfigurationUtils.isExternalLookup(processingHint)) {
                 String contents = ConfigurationUtils.getFileContents(
-                        nonConfigResource.locate(obj.toString().substring(1).trim()));
+                        NON_CONFIG_RESOURCE.locate(obj.toString().substring(1).trim()));
                 if (contents == null) {
                     contents = ConfigurationUtils.getFileContents(obj.toString().substring(1).trim());
                 }
diff --git a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationRepository.java b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationRepository.java
index 5863caef68..63c3b7563f 100644
--- a/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationRepository.java
+++ b/common/onap-common-configuration-management/onap-configuration-management-core/src/main/java/org/onap/config/impl/ConfigurationRepository.java
@@ -35,7 +35,7 @@ import org.onap.config.Constants;
 
 public final class ConfigurationRepository {
 
-    private static final ConfigurationRepository repo = new ConfigurationRepository();
+    private static final ConfigurationRepository REPO = new ConfigurationRepository();
 
     private final Set<String> tenants = Collections.synchronizedSet(new HashSet<>());
 
@@ -63,7 +63,7 @@ public final class ConfigurationRepository {
     }
 
     public static ConfigurationRepository lookup() {
-        return repo;
+        return REPO;
     }
 
     public Set<String> getTenants() {
@@ -119,20 +119,20 @@ public final class ConfigurationRepository {
 
         private final Map<String, FileBasedConfigurationBuilder<FileBasedConfiguration>> overrideConfiguration =
                 new LinkedHashMap<>();
-        BasicConfigurationBuilder<Configuration> builder;
-        Timestamp lastConfigurationBuildTime;
-        Configuration config;
-        Configuration composite;
+        private BasicConfigurationBuilder<Configuration> builder;
+        private Timestamp lastConfigurationBuildTime;
+        private Configuration config;
+        private Configuration composite;
 
-        public ConfigurationHolder(BasicConfigurationBuilder builder) {
+        ConfigurationHolder(BasicConfigurationBuilder builder) {
             this.builder = builder;
         }
 
-        public ConfigurationHolder(Configuration builder) {
+        ConfigurationHolder(Configuration builder) {
             this.config = builder;
         }
 
-        public void addOverrideConfiguration(String path, BasicConfigurationBuilder<FileBasedConfiguration> builder) {
+        void addOverrideConfiguration(String path, BasicConfigurationBuilder<FileBasedConfiguration> builder) {
             overrideConfiguration.put(path.toUpperCase(), (FileBasedConfigurationBuilder) builder);
             getEffectiveConfiguration(config, overrideConfiguration.values());
         }