Add testapp and remove duplicate text from README. (#1518)

Closes #1517.

spring-data-testapp/src/main/java/com/example/demo/Airport.java

@@ -0,0 +1,116 @@
+/*
+ * Copyright 2017-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.example.demo;
+
+import org.springframework.data.annotation.CreatedBy;
+import org.springframework.data.annotation.Id;
+import org.springframework.data.annotation.PersistenceConstructor;
+import org.springframework.data.annotation.TypeAlias;
+import org.springframework.data.annotation.Version;
+import org.springframework.data.couchbase.core.mapping.Document;
+
+import java.time.LocalDate;
+import java.time.LocalDateTime;
+
+/**
+ * Airport entity
+ *
+ * @author Michael Nitschinger
+ * @author Michael Reiche
+ */
+@Document
+@TypeAlias("airport")
+public class Airport {
+	@Id String id;
+	String iata;
+	String icao;
+	LocalDateTime openDate;
+	Long gates;
+	String _class;
+	@Version Number version;
+	@CreatedBy private String createdBy;
+
+	public Airport() {}
+
+	//@PersistenceConstructor
+	public Airport(String id, String iata, String icao) {
+		this.id = id;
+		this.iata = iata;
+		this.icao = icao;
+		this.openDate = null; // LocalDateTime.now();
+		this.gates = Long.valueOf(200);
+	}
+
+	public String getId() {
+		return id;
+	}
+
+	public String getIata() {
+		return iata;
+	}
+
+	public String getIcao() {
+		return icao;
+	}
+
+	public Long getGates() {
+		return gates;
+	}
+
+	public String get_class() {
+		return _class;
+	}
+
+	public LocalDateTime getOpenDate() {
+		return openDate;
+	}
+
+	/*
+		public Airport withId(String id) {
+			return new Airport(id, this.iata, this.icao);
+		}
+	
+		public Airport withIcao(String icao) {
+			return new Airport(this.getId(), this.iata, icao);
+		}
+	
+		public Airport withIata(String iata) {
+			return new Airport(this.getId(), iata, this.icao);
+		}
+	*/
+	public Airport clearVersion() {
+		version = Long.valueOf(0);
+		return this;
+	}
+
+	public String getCreatedBy() {
+		return createdBy;
+	}
+
+	public String toString() {
+		StringBuffer sb = new StringBuffer();
+		sb.append("{ ");
+		sb.append(" id: " + id);
+		sb.append(" iata: " + iata);
+		sb.append(" icao: " + icao);
+		sb.append(" gates: " + gates);
+		sb.append(" open: "+openDate);
+		// sb.append(" date: "+openDate);
+		sb.append(" }");
+		return sb.toString();
+	}
+}