Feat: Adds/Nilejack/home-work09

lesson_09/types/types_app/src/main/java/com/codedifferently/lesson9/dataprovider/DataProvider.java

@@ -1,51 +1,5 @@
 package com.codedifferently.lesson9.dataprovider;
 
-import java.util.List;
-import java.util.Map;
-import java.util.stream.Collectors;
+public class DataProvider {
 
-/**
- * This class is a base class for data providers. It provides a method for parsing data from a list
- * of maps.
- */
-public abstract class DataProvider {
-  /** Returns the name of the provider. */
-  public abstract String getProviderName();
-
-  /** Gets a map of column types keyed by column name. */
-  public abstract Map<String, Class> getColumnTypeByName();
-
-  /**
-   * Given a list of data objects, returns the list with values converted to the appropriate type.
-   *
-   * @param data A list of data objects containing values keyed by column name.
-   * @return A new list with object values converted to the appropriate type.
-   */
-  public List<Map<String, Object>> parseData(List<Map<String, String>> data) throws Exception {
-    Map<String, Class> columnTypeByName = getColumnTypeByName();
-    return data.stream().map(row -> parseRow(columnTypeByName, row)).collect(Collectors.toList());
-  }
-
-  /**
-   * Parses a single row of data using the provided column types mapping.
-   *
-   * @param columnTypeByName A map containing the type of a column keyed by its name.
-   * @param row A bag of values keyed by column name.
-   * @return A new list of data values converted to the appropriate type.
-   */
-  private Map<String, Object> parseRow(
-      Map<String, Class> columnTypeByName, Map<String, String> row) {
-    var parsedRow = new java.util.HashMap<String, Object>();
-    row.forEach(
-        (key, value) -> {
-          Class type = columnTypeByName.get(key);
-          try {
-            parsedRow.put(key, type.getConstructor(String.class).newInstance(value));
-          } catch (Exception e) {
-            throw new RuntimeException(
-                "Error parsing data for " + key + " as type " + type.getName());
-          }
-        });
-    return parsedRow;
-  }
 }

lesson_09/types/types_app/src/main/java/com/codedifferently/lesson9/dataprovider/NileJackProvider.java

@@ -0,0 +1,24 @@
+package com.codedifferently.lesson9.dataprovider;
+
+import java.util.Map;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class NileJackProvider extends DataProvider {
+  public String getProviderName() {
+    return "nilejack";
+  }
+
+  @SuppressWarnings("rawtypes")
+  public Map<String, Class> getColumnTypeByName() {
+    return Map.of(
+        "column1", Float.class,
+        "column2", Integer.class,
+        "column3", Short.class,
+        "column4", String.class,
+        "column5", Boolean.class,
+        "column6", Double.class,
+        "column7", Long.class);
+  }
+}

lesson_09/types/types_app/src/main/java/com/codedifferently/lesson9/dataprovider/NileJacksonProvider.java

@@ -0,0 +1,23 @@
+package com.codedifferently.lesson9.dataprovider;
+
+import java.util.Map;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class NileJackProvider extends DataProvider {
+  public String getProviderName() {
+    return "nilejack";
+  }
+
+  public Map<String, Class> getColumnTypeByName() {
+    return Map.of(
+        "column1", Float.class,
+        "column2", Integer.class,
+        "column3", Short.class,
+        "column4", String.class,
+        "column5", Boolean.class,
+        "column6", Double.class,
+        "column7", Long.class);
+  }
+}

lesson_09/types/types_app/src/main/resources/data/nilejack.json

@@ -0,0 +1,92 @@
+[
+  {
+    "column1": "2.788476E38",
+    "column2": "23906",
+    "column3": "1.951334947469109E306",
+    "column4": "4vynlcbme89",
+    "column5": "true",
+    "column6": "1946511983",
+    "column7": "871716420668780160"
+  },
+  {
+    "column1": "2.9218724E38",
+    "column2": "5982",
+    "column3": "1.6613559878792952E308",
+    "column4": "kcy91i4",
+    "column5": "true",
+    "column6": "467285300",
+    "column7": "717033365520104960"
+  },
+  {
+    "column1": "2.6791138E38",
+    "column2": "3087",
+    "column3": "1.4531283019824207E307",
+    "column4": "5gdku",
+    "column5": "false",
+    "column6": "1339783318",
+    "column7": "8609205761188083712"
+  },
+  {
+    "column1": "2.7654423E38",
+    "column2": "22857",
+    "column3": "1.3125501238039668E308",
+    "column4": "2ab3nxz",
+    "column5": "false",
+    "column6": "1166125928",
+    "column7": "3850529467803900928"
+  },
+  {
+    "column1": "7.978512E37",
+    "column2": "30614",
+    "column3": "1.0016443609479493E308",
+    "column4": "jh490kp25z8",
+    "column5": "true",
+    "column6": "684136174",
+    "column7": "2530680619863128064"
+  },
+  {
+    "column1": "5.8039073E37",
+    "column2": "4886",
+    "column3": "1.3705152061964327E308",
+    "column4": "ak5we9tfr",
+    "column5": "false",
+    "column6": "728654337",
+    "column7": "1671706500207470592"
+  },
+  {
+    "column1": "5.139036E37",
+    "column2": "9019",
+    "column3": "1.2523590249164425E308",
+    "column4": "5tefqwblim3",
+    "column5": "true",
+    "column6": "14150416",
+    "column7": "4871306662885839872"
+  },
+  {
+    "column1": "2.6188858E37",
+    "column2": "2398",
+    "column3": "1.444754024326182E308",
+    "column4": "w8hfk7nl1s",
+    "column5": "false",
+    "column6": "2000776131",
+    "column7": "8280646876683382784"
+  },
+  {
+    "column1": "3.1079513E38",
+    "column2": "32074",
+    "column3": "9.799167831142151E307",
+    "column4": "glx5ze96mk",
+    "column5": "false",
+    "column6": "2134631706",
+    "column7": "3840235999993978368"
+  },
+  {
+    "column1": "1.1965353E38",
+    "column2": "30848",
+    "column3": "1.0643709914035035E308",
+    "column4": "s51gxi7hm3",
+    "column5": "false",
+    "column6": "1598587760",
+    "column7": "8883551926143157248"
+  }
+]

lesson_09/types/types_app/src/test/java/com/codedifferently/lesson9/Lesson9Test.java

@@ -1,21 +1,22 @@
 package com.codedifferently.lesson9;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
-import com.codedifferently.lesson9.dataprovider.DataProvider;
-import com.codedifferently.lesson9.loader.DataFileLoader;
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
 import java.util.stream.Collectors;
+
+import static org.assertj.core.api.Assertions.assertThat;
 import org.assertj.core.api.junit.jupiter.SoftAssertionsExtension;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.test.context.ContextConfiguration;
 
+import com.codedifferently.lesson9.dataprovider.DataProvider;
+import com.codedifferently.lesson9.loader.DataFileLoader;
+
 @SpringBootTest
 @ContextConfiguration(classes = Lesson9.class)
 @ExtendWith(SoftAssertionsExtension.class)