package com.google.gwtorm.schema.sql;

import com.google.gwtorm.client.OrmDuplicateKeyException;
import com.google.gwtorm.client.OrmException;

import java.sql.SQLException;
import java.sql.Types;

/** Dialect for <a href="http://www.postgresql.org/>PostgreSQL</a> */
public class DialectPostgreSQL extends SqlDialect {
  public DialectPostgreSQL() {
    typeNames.put(Types.VARBINARY, "BYTEA");
    typeNames.put(Types.TIMESTAMP, "TIMESTAMP WITH TIME ZONE");
  }

  @Override
  public OrmException convertError(final String op, final String entity,
      final SQLException err) {
    switch (getSQLStateInt(err)) {
      case 23505: // UNIQUE CONSTRAINT VIOLATION
        return new OrmDuplicateKeyException(entity, err);

      case 23514: // CHECK CONSTRAINT VIOLATION
      case 23503: // FOREIGN KEY CONSTRAINT VIOLATION
      case 23502: // NOT NULL CONSTRAINT VIOLATION
      case 23001: // RESTRICT VIOLATION
      default:
        return super.convertError(op, entity, err);
    }
  }

  @Override
  public String getNextSequenceValueSql(final String seqname) {
    return "SELECT nextval('" + seqname + "')";
  }
}