[dwdunwetter] Removed dependency on org.apache.commons (#9138)

* Removed dependency on org.apache.commons
* Incorporated comments from review

Signed-off-by: Christoph Weitkamp <github@christophweitkamp.de>

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/config/DwdUnwetterConfiguration.java

@@ -12,7 +12,6 @@
  */
 package org.openhab.binding.dwdunwetter.internal.config;
 
-import org.apache.commons.lang.StringUtils;
 import org.eclipse.jdt.annotation.NonNullByDefault;
 
 /**
@@ -24,5 +23,5 @@ import org.eclipse.jdt.annotation.NonNullByDefault;
 public class DwdUnwetterConfiguration {
     public int refresh;
     public int warningCount;
-    public String cellId = StringUtils.EMPTY;
+    public String cellId = "";
 }

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/data/DwdWarningData.java

@@ -15,8 +15,6 @@ package org.openhab.binding.dwdunwetter.internal.data;
 import java.math.BigDecimal;
 import java.time.Instant;
 
-import org.apache.commons.lang.StringUtils;
-
 /**
  * Data for one warning.
  *
@@ -93,7 +91,7 @@ public class DwdWarningData {
     }
 
     public boolean isTest() {
-        return StringUtils.equalsIgnoreCase(status, "Test");
+        return "Test".equalsIgnoreCase(status);
     }
 
     public void setMsgType(String msgType) {
@@ -101,7 +99,7 @@ public class DwdWarningData {
     }
 
     public boolean isCancel() {
-        return StringUtils.equalsIgnoreCase(msgType, "Cancel");
+        return "Cancel".equalsIgnoreCase(msgType);
     }
 
     public void setHeadline(String headline) {

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/data/DwdWarningDataAccess.java

@@ -16,7 +16,6 @@ import java.io.IOException;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 
-import org.apache.commons.lang.StringUtils;
 import org.openhab.core.io.net.http.HttpUtil;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -35,23 +34,22 @@ public class DwdWarningDataAccess {
 
     /**
      * Returns the raw Data from the Endpoint.
-     * In case of errors or empty cellId value, returns an {@link StringUtils#EMPTY Empty String}.
+     * In case of errors or empty cellId value, returns an empty String.
      *
      * @param cellId The warnCell-Id for which the warnings should be returned
      * @return The raw data received or an empty string.
      */
     public String getDataFromEndpoint(String cellId) {
         try {
-            if (StringUtils.isBlank(cellId)) {
+            if (cellId == null || cellId.isBlank()) {
                 logger.warn("No cellId provided");
-                return StringUtils.EMPTY;
+                return "";
             }
 
             StringBuilder stringBuilder = new StringBuilder();
             stringBuilder.append(DWD_URL);
             stringBuilder.append("&CQL_FILTER=");
-            stringBuilder
+            stringBuilder.append(URLEncoder.encode("WARNCELLID LIKE '" + cellId + "'", StandardCharsets.UTF_8));
-                    .append(URLEncoder.encode("WARNCELLID LIKE '" + cellId + "'", StandardCharsets.UTF_8.toString()));
             logger.debug("Refreshing Data for cell {}", cellId);
             String rawData = HttpUtil.executeUrl("GET", stringBuilder.toString(), 5000);
             logger.trace("Raw request: {}", stringBuilder);
@@ -63,6 +61,6 @@ public class DwdWarningDataAccess {
             logger.debug("Communication error trace", e);
         }
 
-        return StringUtils.EMPTY;
+        return "";
     }
 }

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/data/DwdXmlTag.java

@@ -14,8 +14,6 @@ package org.openhab.binding.dwdunwetter.internal.data;
 
 import java.util.Arrays;
 
-import org.apache.commons.lang.StringUtils;
-
 /**
  * The XML Tags to extract the relevant parts from the API response.
  * The names map directly to the XML Tags of the API Response.
@@ -52,7 +50,7 @@ public enum DwdXmlTag {
     }
 
     public static DwdXmlTag getDwdXmlTag(String tag) {
-        return Arrays.asList(DwdXmlTag.values()).stream().filter(t -> StringUtils.equals(t.getTag(), tag)).findFirst()
+        return Arrays.asList(DwdXmlTag.values()).stream().filter(t -> tag.equals(t.getTag())).findFirst()
                 .orElse(UNKNOWN);
     }
 }

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/data/Severity.java

@@ -14,8 +14,6 @@ package org.openhab.binding.dwdunwetter.internal.data;
 
 import java.util.Arrays;
 
-import org.apache.commons.lang.StringUtils;
-
 /**
  * Severity enum to make the severity comparable
  *
@@ -46,7 +44,7 @@ public enum Severity {
     }
 
     public static Severity getSeverity(String input) {
-        return Arrays.asList(Severity.values()).stream()
+        return Arrays.asList(Severity.values()).stream().filter(sev -> input.equalsIgnoreCase(sev.getText())).findAny()
-                .filter(sev -> StringUtils.equalsIgnoreCase(input, sev.getText())).findAny().orElse(UNKNOWN);
+                .orElse(UNKNOWN);
     }
 }

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/data/SeverityComparator.java

@@ -14,8 +14,6 @@ package org.openhab.binding.dwdunwetter.internal.data;
 
 import java.util.Comparator;
 
-import org.apache.commons.lang.ObjectUtils;
-
 /**
  * Comperator to sort a Warning first by Severity, second by the onSet date.
  *
@@ -30,7 +28,14 @@ public class SeverityComparator implements Comparator<DwdWarningData> {
 
         int result = Integer.compare(o1.getSeverity().getOrder(), o2.getSeverity().getOrder());
         if (result == 0) {
-            result = ObjectUtils.compare(o1.getOnset(), o2.getOnset());
+            if (o1.getOnset() == o2.getOnset()) {
+                return 0;
+            } else if (o1.getOnset() == null) {
+                return -1;
+            } else if (o2.getOnset() == null) {
+                return 1;
+            }
+            return o1.getOnset().compareTo(o2.getOnset());
         }
         return result;
     }

bundles/org.openhab.binding.dwdunwetter/src/main/java/org/openhab/binding/dwdunwetter/internal/data/Urgency.java

@@ -14,8 +14,6 @@ package org.openhab.binding.dwdunwetter.internal.data;
 
 import java.util.Arrays;
 
-import org.apache.commons.lang.StringUtils;
-
 /**
  * Enum for the urgency of the warning.
  *
@@ -38,7 +36,7 @@ public enum Urgency {
     }
 
     public static Urgency getUrgency(String input) {
-        return Arrays.asList(Urgency.values()).stream()
+        return Arrays.asList(Urgency.values()).stream().filter(urg -> input.equalsIgnoreCase(urg.getText())).findAny()
-                .filter(urg -> StringUtils.equalsIgnoreCase(input, urg.getText())).findAny().orElse(UNKNOWN);
+                .orElse(UNKNOWN);
     }
 }

bundles/org.openhab.binding.dwdunwetter/src/test/java/org/openhab/binding/dwdunwetter/DwdUnwetterHandlerTest.java

@@ -19,11 +19,11 @@ import static org.mockito.Mockito.*;
 
 import java.io.InputStream;
 import java.util.List;
+import java.util.Objects;
 
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
 
-import org.apache.commons.lang.StringUtils;
 import org.hamcrest.CoreMatchers;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -122,7 +122,7 @@ public class DwdUnwetterHandlerTest extends JavaTest {
             if (nodeId == null) {
                 continue;
             }
-            if (StringUtils.equals(nodeId.getTextContent(), uuid.getId())) {
+            if (Objects.equals(nodeId.getTextContent(), uuid.getId())) {
                 return getLabel(node.getChildNodes());
             }
         }