franta-hg@1
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package info.globalcode.sql.dk;
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franta-hg@1
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franta-hg@4
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import java.sql.Types;
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franta-hg@4
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import java.util.ArrayList;
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franta-hg@4
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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franta-hg@4
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franta-hg@1
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/**
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franta-hg@1
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*
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* @author Ing. František Kučera (frantovo.cz)
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*/
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public class CLIStarter {
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franta-hg@1
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public static final String TYPE_NAME_SEPARATOR = ":";
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private static final Map<String, Integer> types;
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franta-hg@4
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static {
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franta-hg@4
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Map<String, Integer> m = new HashMap<>();
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m.put("int", Types.INTEGER);
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m.put("string", Types.VARCHAR);
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m.put("boolean", Types.BOOLEAN);
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/**
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* TODO: more types
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*/
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types = Collections.unmodifiableMap(m);
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}
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franta-hg@4
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public static void main(String[] args) {
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franta-hg@2
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args = new String[]{"--sql", "SELECT * FROM tabulka;", "--db", "databáze_1", "--types", "int,bbb,omfg:int,omg:boolean", "--data", "xxx", ":omfg", "hodnota omfg", ":omg", "true"};
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franta-hg@2
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CLIOptions options = parseOptions(args);
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}
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private static CLIOptions parseOptions(String[] args) {
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CLIOptions options = new CLIOptions();
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List<Integer> numberedTypes = new ArrayList<>();
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Map<String, Integer> namedTypes = new HashMap<>();
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for (int i = 0; i < args.length; i++) {
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String arg = args[i];
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switch (arg) {
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case Tokens.TYPES:
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String typesString = args[++i];
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for (String oneType : typesString.split("\\s*,\\s*")) {
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int sepatratorIndex = oneType.indexOf(TYPE_NAME_SEPARATOR);
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if (sepatratorIndex == -1) {
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numberedTypes.add(getType(oneType));
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} else {
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String namePart = oneType.substring(0, sepatratorIndex);
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String typePart = oneType.substring(sepatratorIndex + TYPE_NAME_SEPARATOR.length(), oneType.length());
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namedTypes.put(namePart, getType(typePart));
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}
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}
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break;
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case Tokens.NAME_PREFIX:
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options.setNamePrefix(args[++i]);
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break;
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case Tokens.DB:
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options.setDatabaseName(args[++i]);
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break;
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case Tokens.SQL:
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options.setSql(args[++i]);
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options.setCommandType(CLIOptions.COMMAND_TYPE.QUERY);
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break;
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case Tokens.SQL_UPDATE:
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case Tokens.SQL_INSERT:
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options.setSql(args[++i]);
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options.setCommandType(CLIOptions.COMMAND_TYPE.UPDATE);
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break;
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case Tokens.BATCH:
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options.setBatch(true);
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break;
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case Tokens.DATA: // --data is the last option
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for (i++; i < args.length; i++) {
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arg = args[i];
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if (arg.startsWith(options.getNamePrefix())) {
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String paramName = arg.substring(options.getNamePrefix().length());
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String paramValue = args[++i];
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options.addNamedParameter(new NamedParameter(paramName, paramValue, namedTypes.get(paramName)));
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} else {
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int paramIndex = options.getNumberedParameters().size();
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int paramType;
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try {
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paramType = numberedTypes.get(paramIndex);
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} catch (IndexOutOfBoundsException e) {
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throw new IllegalArgumentException("Missing type for parameter #" + paramIndex, e);
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} catch (NullPointerException e) {
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throw new IllegalArgumentException("Invalid type definition for parameter #" + paramIndex, e);
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}
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options.addNumberedParameter(new Parameter(arg, paramType));
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}
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}
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break;
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default:
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throw new IllegalArgumentException("Unknown option: " + arg);
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}
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}
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return options;
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}
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public static class Tokens {
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public static final String DB = "--db";
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public static final String SQL = "--sql";
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public static final String SQL_UPDATE = "--sql-update";
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public static final String SQL_INSERT = "--sql-insert";
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public static final String BATCH = "--batch";
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public static final String DATA = "--data";
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public static final String NAME_PREFIX = "--name-prefix";
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public static final String TYPES = "--types";
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private Tokens() {
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}
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}
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private static Integer getType(String typeString) {
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return types.get(typeString);
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}
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}
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