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Viewing changes to src/main/java/cz/startnet/utils/pgdiff/parsers/CreateSchemaParser.java

  • Committer: Bazaar Package Importer
  • Author(s): Christoph Berg
  • Date: 2008-09-09 15:42:54 UTC
  • Revision ID: james.westby@ubuntu.com-20080909154254-458sv7ew1rczdal1
Tags: upstream-1.2
Import upstream version 1.2

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src/main/java/cz/startnet/utils/pgdiff/parsers/CreateSchemaParser.java
 
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/*
 
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 * $Id: CreateSchemaParser.java 81 2007-09-01 20:26:38Z fordfrog $
 
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 */
 
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package cz.startnet.utils.pgdiff.parsers;
 
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import cz.startnet.utils.pgdiff.schema.PgDatabase;
 
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import cz.startnet.utils.pgdiff.schema.PgSchema;
 
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import java.util.regex.Matcher;
 
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import java.util.regex.Pattern;
 
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/**
 
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 * Parses CREATE SCHEMA commands.
 
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 *
 
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 * @author fordfrog
 
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 * @version $Id: CreateSchemaParser.java 81 2007-09-01 20:26:38Z fordfrog $
 
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 */
 
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public class CreateSchemaParser {
 
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    /**
 
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     * Pattern for parsing CREATE SCHEMA ... AUTHORIZATION ...
 
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     */
 
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    private static final Pattern PATTERN_CREATE_SCHEMA =
 
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        Pattern.compile(
 
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                "^CREATE[\\s]+SCHEMA[\\s]+([^\\s;]+)"
 
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                + "(?:[\\s]+AUTHORIZATION[\\s]+([^\\s;]+))?;$",
 
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                Pattern.CASE_INSENSITIVE);
 
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    /**
 
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     * Pattern for parsing CREATE SCHEMA AUTHORIZATION ...
 
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     */
 
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    private static final Pattern PATTERN_CREATE_SCHEMA_AUTHORIZATION =
 
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        Pattern.compile(
 
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                "^CREATE[\\s]+SCHEMA[\\s]+AUTHORIZATION[\\s]+([^\\s;]+);$",
 
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                Pattern.CASE_INSENSITIVE);
 
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    /**
 
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     * Creates a new CreateSchemaParser object.
 
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     */
 
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    private CreateSchemaParser() {
 
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        super();
 
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    }
 
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    /**
 
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     * Parses CREATE SCHEMA command.
 
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     *
 
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     * @param database database
 
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     * @param command CREATE SCHEMA command
 
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     *
 
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     * @throws ParserException Thrown if problem occured while parsing the
 
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     *         command.
 
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     */
 
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    public static void parse(final PgDatabase database, final String command) {
 
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        final Matcher matcher = PATTERN_CREATE_SCHEMA.matcher(command);
 
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        if (matcher.matches()) {
 
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            final PgSchema schema = new PgSchema(matcher.group(1));
 
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            final String authorization = matcher.group(2);
 
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            if (authorization != null) {
 
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                schema.setAuthorization(authorization);
 
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            }
 
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            database.addSchema(schema);
 
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        } else {
 
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            final Matcher matcher2 =
 
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                PATTERN_CREATE_SCHEMA_AUTHORIZATION.matcher(command);
 
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            if (matcher2.matches()) {
 
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                final PgSchema schema = new PgSchema(matcher.group(1));
 
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                schema.setAuthorization(schema.getName());
 
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                database.addSchema(schema);
 
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            } else {
 
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                throw new ParserException(
 
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                        ParserException.CANNOT_PARSE_COMMAND + command);
 
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            }
 
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        }
 
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    }
 
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}