Java tutorial
/** * Copyright 2012 John W. Krupansky d/b/a Base Technology * * 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 com.basetechnology.s0.agentserver.field; import java.util.ArrayList; import java.util.Arrays; import java.util.List; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; import com.basetechnology.s0.agentserver.script.intermediate.IntegerTypeNode; import com.basetechnology.s0.agentserver.script.intermediate.ObjectTypeNode; import com.basetechnology.s0.agentserver.script.intermediate.StringTypeNode; import com.basetechnology.s0.agentserver.script.intermediate.Symbol; import com.basetechnology.s0.agentserver.script.intermediate.SymbolTable; import com.basetechnology.s0.agentserver.script.intermediate.TypeNode; import com.basetechnology.s0.agentserver.script.runtime.value.StringValue; import com.basetechnology.s0.agentserver.script.runtime.value.Value; public class MultiChoiceField extends Field { public String defaultValue; public List<String> choices; public int nominalWidth; public MultiChoiceField(SymbolTable symbolTable, String name, String choices) { this.symbol = new Symbol(symbolTable, name, IntegerTypeNode.one); this.label = name; this.choices = Arrays.asList(choices.split(",")); } public MultiChoiceField(SymbolTable symbolTable, String name, String label, String choices) { this.symbol = new Symbol(symbolTable, name, IntegerTypeNode.one); this.label = label; this.choices = Arrays.asList(choices.split(",")); } public MultiChoiceField(SymbolTable symbolTable, String name, String label, String description, String defaultValue, List<String> choices, int nominalWidth, String compute) { this.symbol = new Symbol(symbolTable, name, IntegerTypeNode.one); this.label = label; this.description = description; this.defaultValue = defaultValue; this.choices = choices; this.nominalWidth = nominalWidth; this.compute = compute; } public Field clone() { return new MultiChoiceField(symbol.symbolTable, symbol.name, label, description, defaultValue, choices, nominalWidth, compute); } public Object getDefaultValue() { return defaultValue; } public Value getDefaultValueNode() { return new StringValue(defaultValue); } public TypeNode getType() { return StringTypeNode.one; } public static Field fromJson(SymbolTable symbolTable, JSONObject fieldJson) { String type = fieldJson.optString("type"); if (type == null || !type.equals("multi_choice_field")) return null; String name = fieldJson.has("name") ? fieldJson.optString("name") : null; String label = fieldJson.has("label") ? fieldJson.optString("label") : null; String description = fieldJson.has("description") ? fieldJson.optString("description") : null; String defaultValue = fieldJson.has("default_value") ? fieldJson.optString("default_value") : null; List<String> choices = new ArrayList<String>(); if (fieldJson.has("choices")) { JSONArray choicesJson = fieldJson.optJSONArray("choices"); int n = choicesJson.length(); for (int i = 0; i < n; i++) choices.add(choicesJson.optString(i)); } int nominalWidth = fieldJson.has("nominal_width") ? fieldJson.optInt("nominal_width") : 0; String compute = fieldJson.has("compute") ? fieldJson.optString("compute") : null; return new MultiChoiceField(symbolTable, name, label, description, defaultValue, choices, nominalWidth, compute); } public JSONObject toJson() throws JSONException { JSONObject json = new JSONObject(); json.put("type", "multi_choice"); if (symbol.name != null) json.put("name", symbol.name); if (label != null) json.put("label", label); if (description != null) json.put("description", description); if (defaultValue != null) json.put("default_value", defaultValue); JSONArray choicesJson = new JSONArray(); if (choices != null) for (String choice : choices) choicesJson.put(choice); json.put("choices", choicesJson); if (nominalWidth != 0) json.put("nominal_width", nominalWidth); if (compute != null) json.put("compute", compute); return json; } public String toString() { return "[Choice field symbol: " + symbol + " label: " + label + " description: '" + description + "'" + " default value: " + defaultValue + " nominal width: " + nominalWidth + " choices: " + choices.toString() + " compute: (" + compute + ")" + "]"; } }