1 files changed, 152 insertions, 0 deletions
diff --git a/AlgoAufgabe1/src/de/ostfalia/algo/ws18/s1/Management.java b/AlgoAufgabe1/src/de/ostfalia/algo/ws18/s1/Management.java
new file mode 100644
index 0000000..8630615
--- /dev/null
+++ b/AlgoAufgabe1/src/de/ostfalia/algo/ws18/s1/Management.java
@@ -0,0 +1,152 @@
+package de.ostfalia.algo.ws18.s1;
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.time.LocalDate;
+import java.time.format.DateTimeFormatter;
+import java.util.Optional;
+import java.util.function.Predicate;
+
+import de.ostfalia.algo.ws18.base.Gender;
+import de.ostfalia.algo.ws18.base.IManagement;
+import de.ostfalia.algo.ws18.base.IMember;
+import de.ostfalia.algo.ws18.base.KindOfSport;
+
+public class Management implements IManagement {
+	private int numberOfOperations = 0;
+	
+	private Optional<LinkedListNode<IMember>> head = Optional.empty();
+	private int size = 0;
+	boolean reversed = false;
+	
+	public Management() {
+	}
+
+	public Management(String[] membersCsv) {
+		for (String memberCsv : membersCsv) {
+			this.insert(new Member(memberCsv));
+		}
+	}
+
+	public Management(String filename) {
+		this.importFromFile(filename);
+	}
+
+	private void importFromFile(String filename) {
+		File file = new File(filename);
+
+		try (BufferedReader bufferedReader = new BufferedReader(new FileReader(file))) {
+			bufferedReader.lines().forEach(line -> insert(new Member(line)));
+		} catch (IOException exception) {
+			throw new IllegalArgumentException(exception);
+		}
+	}
+
+	@Override
+	public int size() {
+		return this.size;
+	}
+
+	@Override
+	public boolean insert(IMember value) {
+		this.numberOfOperations++;
+		
+		LinkedListNode<IMember> newHead = new LinkedListNode<IMember>(value);
+		if (this.head.isPresent()) {
+			newHead.setNext(this.head.get());
+		}
+		this.head = Optional.of(newHead);
+
+		this.size++;
+		return true; // TODO?
+	}
+
+	private Management filter(Predicate<IMember> criteria, boolean breakAfterFirstMatch) {
+		Management result = new Management();
+		if (!this.head.isPresent()) {
+			return result;
+		}
+
+		// searches from head, inserts at head -> result is reversed
+		result.reverse();
+		
+		LinkedListNode<IMember> currentNode = this.head.get();
+		do {
+			this.numberOfOperations++;
+
+			IMember currentValue = currentNode.getValue();
+			if (criteria.test(currentValue)) {
+				result.insert(currentValue);
+				if (breakAfterFirstMatch) {
+					break;
+				}
+			}
+		} while ((currentNode = currentNode.getNext()) != null);
+
+		return result;
+	}
+
+	private Optional<IMember> search(Predicate<IMember> criteria) {
+		return this.filter(criteria, true).head.map(head -> head.getValue());
+	}
+
+	private long size(Predicate<IMember> criteria) {
+		return this.filter(criteria, false).size;
+	}
+	
+	public void reverse() {
+		this.reversed = !this.reversed;
+	}
+
+	@Override
+	public IMember search(long key) {
+		return this.search(member -> member.getKey() == key).orElse(null);
+	}
+
+	@Override
+	public IMember search(String name, String firstName) {
+		return this.search(member -> member.getName().equals(name)
+				&& member.getFirstName().equals(firstName)).orElse(null);
+	}
+
+	@Override
+	public int size(KindOfSport kindOfSport) {
+		return (int) this.size(member -> member.getKindOfSport().equals(kindOfSport));
+	}
+
+	@Override
+	public IMember[] discipline(KindOfSport kindOfSport) {
+		return this.filter(member -> member.getKindOfSport().equals(kindOfSport), false)
+				.toArray();
+	}
+
+	@Override
+	public IMember[] toArray() {
+		IMember[] array = new IMember[this.size];
+		if (!this.head.isPresent()) {
+			return array;
+		}
+
+		LinkedListNode<IMember> currentNode = this.head.get();
+
+		for (int index = 0; index < this.size; index++) {
+			if (reversed) {
+				array[this.size - index - 1] = currentNode.getValue();
+			} else {
+				array[index] = currentNode.getValue();
+			}
+			currentNode = currentNode.getNext();
+		}
+		
+		return array;
+	}
+
+	@Override
+	public int numberOfOperations() {
+		int numberOfOperations = this.numberOfOperations;
+		this.numberOfOperations = 0;
+		return numberOfOperations;
+	}
+}