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DDL and DB Migration generation

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package io.ebeaninternal.dbmigration.ddlgeneration.platform;

import io.ebean.config.dbplatform.DatabasePlatform;
import io.ebeaninternal.dbmigration.ddlgeneration.DdlBuffer;

/**
 * CockroachDB specific DDL handling.
 */
public class CockroachDdl extends PlatformDdl {

  public CockroachDdl(DatabasePlatform platform) {
    super(platform);
    this.dropTableCascade = " cascade";
    this.columnSetType = "type ";
    this.alterTableIfExists = "if exists ";
    this.columnSetNull = "drop not null";
  }

  @Override
  protected String convertArrayType(String logicalArrayType) {
    return NativeDbArray.logicalToNative(logicalArrayType);
  }

  /**
   * Map bigint, integer and smallint all into serial.
   */
  @Override
  public String asIdentityColumn(String columnDefn, DdlIdentity identity) {
    if ("bigint".equalsIgnoreCase(columnDefn)) {
      return "serial";
    }
    if ("integer".equalsIgnoreCase(columnDefn)) {
      return "serial";
    }
    if ("smallint".equalsIgnoreCase(columnDefn)) {
      return "serial";
    }
    return columnDefn;
  }

  @Override
  public void addTableComment(DdlBuffer apply, String tableName, String tableComment) {
    // do nothing
  }

  @Override
  public void addColumnComment(DdlBuffer apply, String table, String column, String comment) {
    // do nothing
  }

  @Override
  public boolean isInlineComments() {
    return false;
  }
}