put balance in user export

src/main/java/net/collaud/fablab/manager/data/UserBalanceEO.java

@@ -10,6 +10,7 @@
 import javax.persistence.Table;
 import lombok.Getter;
 import lombok.ToString;
+import net.collaud.fablab.manager.export.CsvToString;
 
 /**
  *
@@ -19,7 +20,7 @@
 @Table(name = "v_user_balance_grouped")
 @Getter
 @ToString
-public class UserBalanceEO implements Serializable {
+public class UserBalanceEO implements Serializable, CsvToString {
 
 	private static final long serialVersionUID = 1L;
 
@@ -31,4 +32,9 @@ public class UserBalanceEO implements Serializable {
 
 	@Column(name = "balance", nullable = false)
 	private double value;
+
+	@Override
+	public String CsvToString() {
+		return String.valueOf(value);
+	}
 }

src/main/java/net/collaud/fablab/manager/data/UserEO.java

@@ -138,6 +138,7 @@ public class UserEO extends AbstractDataEO<Integer> implements Serializable {
 	@ManyToOne(optional = false, fetch = FetchType.LAZY)
 	private MembershipTypeEO membershipType;
 
+	@CsvField(headerName="Balance")
 	@OneToOne(fetch = FetchType.LAZY)
 	@JoinColumn(name = "user_id", referencedColumnName = "user_id")
 	private UserBalanceEO balance;

src/main/java/net/collaud/fablab/manager/export/CsvExporter.java

@@ -69,7 +69,7 @@ protected String getFieldValue(T obj, Field f) {
 		try {
 			f.setAccessible(true);
 			return Optional.ofNullable(f.get(obj))
-					.map(v -> v.toString())
+					.map(v -> (v instanceof CsvToString) ? ((CsvToString)v).CsvToString() : v.toString())
 					.map(v-> v.replace(FIELD_SEPARATOR, FIELD_SEPARATOR_REPLACE))
 					.map(v -> v.replace("\r\n", "\t"))
 					.map(v -> v.replace("\n", "\t"))

src/main/java/net/collaud/fablab/manager/export/CsvToString.java

@@ -0,0 +1,9 @@
+package net.collaud.fablab.manager.export;
+
+/**
+ *
+ * @author Gaetan Collaud
+ */
+public interface CsvToString {
+	String CsvToString();
+}