changes

core/src/main/java/org/solovyev/common/ListMapper.java

@@ -0,0 +1,35 @@
+package org.solovyev.common;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.solovyev.common.text.CollectionTransformations;
+import org.solovyev.common.text.Mapper;
+
+import java.util.List;
+
+public class ListMapper<T> implements Mapper<List<T>> {
+
+	@NotNull
+	private final Mapper<T> nestedMapper;
+
+	private ListMapper(@NotNull Mapper<T> nestedMapper) {
+		this.nestedMapper = nestedMapper;
+	}
+
+	@NotNull
+	private static <T> Mapper<List<T>> newInstance(@NotNull Mapper<T> nestedMapper) {
+		return new ListMapper<T>(nestedMapper);
+	}
+
+	@Nullable
+	@Override
+	public String formatValue(@Nullable List<T> value) throws IllegalArgumentException {
+		return CollectionTransformations.formatValue(value, ";", nestedMapper);
+	}
+
+	@Nullable
+	@Override
+	public List<T> parseValue(@Nullable String value) throws IllegalArgumentException {
+		return CollectionTransformations.split(value, ";", nestedMapper);
+	}
+}