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/*
* Copyright 2007 Daniel Spiewak
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.java.ao.schema;
import java.util.List;
import java.util.Objects;
import static net.java.ao.schema.UnderScoreUtils.camelCaseToUnderScore;
/**
* Imposes an underscore word-separation convention upon field names.
* This will convert field in the following way:
*
*
*
* Method Name
* Returns Entity?
* Field Name
*
*
*
* getFirstName
* false
* first_name
*
*
*
* setLastName
* false
* last_name
*
*
*
* getCompany
* true
* company_id
*
*
*
* isCool
* false
* cool
*
*
*
* This converter allows for both all-lowercase and all-uppercase
* field name conventions. For example, depending on the configuration,
* getLastName
may convert to "LAST_NAME".
*
* This converter is all that is required to emulate the ActiveRecord
* field name conversion.
*
* @author Daniel Spiewak
*/
public final class UnderscoreFieldNameConverter extends AbstractFieldNameConverter {
private final Case fieldNameCase;
/**
* Creates a new field name converter in which all field names will
* be either fully uppercase or fully lowercase.
*
* @param fieldNameCase the case to use for field names
*/
public UnderscoreFieldNameConverter(Case fieldNameCase) {
this.fieldNameCase = Objects.requireNonNull(fieldNameCase, "fieldNameCase can't be null");
}
public UnderscoreFieldNameConverter(Case fieldNameCase, List fieldNameResolvers) {
super(fieldNameResolvers);
this.fieldNameCase = Objects.requireNonNull(fieldNameCase, "fieldNameCase can't be null");
}
@Override
public String convertName(String name) {
return fieldNameCase.apply(camelCaseToUnderScore(name));
}
}