@Override
	public String toDSL() {
		StringBuilder dsl = new StringBuilder();
		dsl.append(String.format("jdbchdfs --directory=%s --fileName=%s", this.dir, this.fileName));

		if(StringUtils.hasText(this.checkColumn)) {
			dsl.append(String.format(" --tableName=%s --columns=%s --checkColumn=%s", this.table, this.columns, this.checkColumn));
		}

		if(StringUtils.hasText(this.partitionColumn)) {
			dsl.append(String.format(" --partitionColumn=%s --partitions=%s", this.partitionColumn, this.partitions));
		}

		return dsl.toString();
	}
Renders the default DSL for this fixture.
spring-xd-test-fixtures/src/main/java/org/springframework/xd/test/fixtures/IncrementalJdbcHdfsJob.java