Java tutorial
/* * Copyright 2016 Claymore Minds Limited and Niche Solutions (UK) Limited * * 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 * * http://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 io.viewserver.operators.table; import org.apache.commons.lang.StringUtils; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; /** * Created by paulrg on 26/11/2014. */ public class TableKeyDefinition { private final List<String> keys; private final String SEPARATOR = "@@"; public TableKeyDefinition(String key) { this.keys = Arrays.asList(key.replace(" ", "").split(",")); } public TableKeyDefinition(String... keys) { this.keys = Arrays.asList(keys); } public String getValue(TableKey tableKey) { return StringUtils.join(tableKey.getValues(), SEPARATOR); } public String getValue(HashMap<String, Object> values) { List<Object> keyValues = new ArrayList<>(); int count = this.keys.size(); for (int i = 0; i < count; i++) { keyValues.add(values.get(keys.get(i))); } return StringUtils.join(keyValues, SEPARATOR); } public String getKeyName() { return StringUtils.join(this.keys, SEPARATOR); } public int size() { return this.keys.size(); } public List<String> getKeys() { return this.keys; } public String get(int index) { return this.keys.get(index); } }