/*
* Copyright 2013 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
*
* 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 org.springframework.xd.shell.command;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.xd.rest.domain.ModuleDefinitionResource;
import org.springframework.xd.rest.domain.RESTModuleType;
import org.springframework.xd.shell.util.Table;
import org.springframework.xd.shell.util.TableHeader;
import org.springframework.xd.shell.util.TableRow;
/**
* Knows how to render a {@link Table} of {@link ModuleDefinitionResource}.
*
* @author Florent Biville
* @author Eric Bottard
*/
class ModuleList {
private Iterable<ModuleDefinitionResource> modules;
private static final Map<String, Integer> typeToColumn = new LinkedHashMap<String, Integer>();
static {
for (int i = 0; i < RESTModuleType.values().length;) {
typeToColumn.put(RESTModuleType.values()[i].name(), ++i); // 1 based
}
}
public ModuleList(Iterable<ModuleDefinitionResource> modules) {
Assert.notNull(modules);
this.modules = modules;
}
public Table renderByType() {
Table table = new Table();
int i = 1;
Map<String, Integer> currentRowByType = new HashMap<String, Integer>();
for (String type : typeToColumn.keySet()) {
table.addHeader(i++, new TableHeader(" " + StringUtils.capitalize(type)));
}
for (ModuleDefinitionResource module : modules) {
TableRow row = rowForType(module.getType(), table, currentRowByType);
row.addValue(typeToColumn.get(module.getType()), cellValue(module));
}
return table;
}
private String cellValue(ModuleDefinitionResource module) {
return String.format("%s %s", module.isComposed() ? "(c)" : " ", module.getName());
}
/**
* Return the row to which a module of the given type should be added. Will autogrow the table if needed.
*/
private TableRow rowForType(String type, Table table, Map<String, Integer> currentRowByType) {
Integer value = currentRowByType.get(type);
if (value == null) {
value = 0;
}
currentRowByType.put(type, value + 1);
TableRow result = null;
if (value >= table.getRows().size()) {
result = new TableRow();
for (int i = 1; i <= typeToColumn.size(); i++) {
result.addValue(i, "");
}
table.getRows().add(result);
}
else {
result = table.getRows().get(value);
}
return result;
}
}