docs: create searchByid documentation

Signed-off-by: Otavio Santana <[email protected]>

core/src/main/java/expert/os/harperdb/SearchById.java

@@ -2,9 +2,14 @@
 
 import com.fasterxml.jackson.annotation.JsonProperty;
 
+import java.util.Objects;
 import java.util.Set;
 
-final class SearchById extends Operation{
+/**
+ * Represents the "search by ID" operation in HarperDB.
+ * This operation is used to retrieve records from a specific table in a given database based on their IDs.
+ */
+final class SearchById extends Operation {
 
 
     @JsonProperty
@@ -19,11 +24,48 @@ final class SearchById extends Operation{
     @JsonProperty("get_attributes")
     private final Set<String> attributes;
 
+    /**
+     * Constructs a new SearchById operation with the specified database, table, IDs, and attributes.
+     *
+     * @param database   The name of the database where records will be searched.
+     * @param table      The name of the table where records will be searched.
+     * @param ids        The set of IDs used to identify and retrieve specific records.
+     * @param attributes The set of attributes to retrieve for each record.
+     */
     SearchById(String database, String table, Set<Object> ids, Set<String> attributes) {
         super(OperationType.SEARCH_BY_ID);
         this.database = database;
         this.table = table;
         this.ids = ids;
         this.attributes = attributes;
     }
+
+
+    @Override
+    public boolean equals(Object object) {
+        if (this == object) {
+            return true;
+        }
+        if (object == null || getClass() != object.getClass()) {
+            return false;
+        }
+        SearchById that = (SearchById) object;
+        return Objects.equals(database, that.database) && Objects.equals(table, that.table)
+                && Objects.equals(ids, that.ids) && Objects.equals(attributes, that.attributes);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(database, table, ids, attributes);
+    }
+
+    @Override
+    public String toString() {
+        return "SearchById{" +
+                "database='" + database + '\'' +
+                ", table='" + table + '\'' +
+                ", ids=" + ids +
+                ", attributes=" + attributes +
+                '}';
+    }
 }