Holmes was engaged in the business of raising and processing chickens. He bought property in Clackamas County, Oregon, on which he planned to erect a chicken-processing plant. To prepare for construction, he spent $33,000 to install a well system, plant special grass, and run soil tests to determine where drain fields for the plant’s sewage should be located. Later Clackamas County enacted an ordinance zoning the property Rural Agricultural-Single Family Residential. The zoning prohibited further construction of the chicken processing plant. Holmes continued work and the county sued. The trial court enjoined defendant from further construction. He appealed. What resulted? (Clackamas County v. Holmes, 508 P.2d 190, Oregon)