author | František Kučera <franta-hg@frantovo.cz> |
Sun, 15 Dec 2013 23:54:51 +0100 | |
branch | v_0 |
changeset 8 | 4507cb9a0cf1 |
parent 5 | 26223eb63851 |
child 9 | 2ec52027b97f |
permissions | -rw-r--r-- |
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package info.globalcode.sql.dk; |
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import java.sql.Types; |
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import java.util.ArrayList; |
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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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/** |
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* |
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* @author Ing. František Kučera (frantovo.cz) |
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*/ |
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public class CLIParser { |
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public static final String TYPE_NAME_SEPARATOR = ":"; |
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private final Map<String, Integer> types; |
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public CLIParser() { |
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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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5 | 30 |
public 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 = fetchNext(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(fetchNext(args, ++i)); |
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break; |
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case Tokens.DB: |
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options.setDatabaseName(fetchNext(args, ++i)); |
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break; |
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case Tokens.SQL: |
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options.setSql(fetchNext(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(fetchNext(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())) { // Named parameters: |
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String paramName = arg.substring(options.getNamePrefix().length()); |
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String paramValue = fetchNext(args, ++i); |
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options.addNamedParameter(new NamedParameter(paramName, paramValue, namedTypes.get(paramName))); |
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} else { // Numbered parameters: |
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Parameter parameter; |
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if (numberedTypes.isEmpty()) { |
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parameter = new Parameter(arg, null); |
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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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parameter = new Parameter(arg, paramType); |
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} |
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options.addNumberedParameter(parameter); |
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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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} |
8 | 103 |
return options; |
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} |
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private String fetchNext(String[] args, int index) { |
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if (index < args.length) { |
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return args[index]; |
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} else { |
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throw new IllegalArgumentException("Expecting value for option: " + args[index - 1]); |
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} |
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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"; |
2 | 119 |
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"; |
2 | 122 |
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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8 | 129 |
private int getType(String typeString) { |
130 |
Integer type = types.get(typeString); |
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131 |
if (type == null) { |
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throw new IllegalArgumentException("Unsupported type: " + typeString); |
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} else { |
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return type; |
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} |
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} |
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} |