src/org/objectweb/cjdbc/common/sql/DropRequest.java

説明を見る。

package org.objectweb.cjdbc.common.sql;

import java.io.Serializable;
import java.sql.SQLException;

import org.objectweb.cjdbc.common.sql.schema.DatabaseSchema;
import org.objectweb.cjdbc.common.sql.schema.DatabaseTable;

public class DropRequest extends AbstractWriteRequest implements Serializable
{

  public DropRequest(String sqlQuery, boolean escapeProcessing, int timeout,
      String lineSeparator, DatabaseSchema schema, int granularity,
      boolean isCaseSensitive) throws SQLException
  {
    this(sqlQuery, escapeProcessing, timeout, lineSeparator);
    parse(schema, granularity, isCaseSensitive);
  }

  public DropRequest(String sqlQuery, boolean escapeProcessing, int timeout,
      String lineSeparator)
  {
    super(sqlQuery, escapeProcessing, timeout, lineSeparator);
    cacheable = RequestType.UNCACHEABLE;
    isParsed = false;
  }

  public void parse(DatabaseSchema schema, int granularity,
      boolean isCaseSensitive) throws SQLException
  {
    if (granularity == ParsingGranularities.NO_PARSING)
    {
      isParsed = true;
      return;
    }

    String originalSQL = this.trimCarriageReturn();
    String dropTable = originalSQL.toLowerCase();

    // Strip 'drop (temporary) table '
    int tableIdx = dropTable.indexOf("table");
    if (isCaseSensitive)
      dropTable = originalSQL.substring(tableIdx + 5).trim();
    else
      dropTable = dropTable.substring(tableIdx + 5).trim();

    if (schema == null)
      tableName = dropTable;
    else
    {
      // Get the table on which DROP occurs
      DatabaseTable t = schema.getTable(dropTable, isCaseSensitive);
      if (t == null)
        throw new SQLException("Unknown table '" + dropTable
            + "' in this DROP statement '" + sqlQuery + "'");
      else
        tableName = t.getName();
    }
    isParsed = true;
  }

  public void cloneParsing(AbstractRequest request)
  {
    if (!request.isParsed())
      return;
    cloneTableNameAndColumns((AbstractWriteRequest) request);
    isParsed = true;
  }

  public boolean isInsert()
  {
    return false;
  }

  public boolean isUpdate()
  {
    return false;
  }

  public boolean isDelete()
  {
    return false;
  }

  public boolean isCreate()
  {
    return false;
  }

  public boolean isDrop()
  {
    return true;
  }

  public void debug()
  {
    super.debug();
    if (tableName != null)
      System.out.println("Dropped table '" + tableName + "'");
    else
      System.out.println("No information about dropped table");

    System.out.println();
  }
  public boolean isAlter()
  {
    return false;
  }
}

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