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Jeddict is an open source Jakarta EE application development platform that accelerates developers productivity and simplifies development tasks of creating complex entity relationship models.

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/**
 * Copyright 2013-2022 the original author or authors from the Jeddict project (https://jeddict.github.io/).
 *
 * 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 io.github.jeddict.orm.generator.compiler;

import static io.github.jeddict.jcode.JPAConstants.GENERATED_VALUE;
import static io.github.jeddict.jcode.JPAConstants.GENERATED_VALUE_FQN;
import static io.github.jeddict.jcode.JPAConstants.GENERATION_TYPE_FQN;
import java.util.Collection;
import java.util.HashSet;
import java.util.Set;
import static io.github.jeddict.util.StringUtils.isNotBlank;

public class GeneratedValueSnippet implements Snippet {

    public static final String AUTO = "GenerationType.AUTO";
    public static final String IDENTITY = "GenerationType.IDENTITY";
    public static final String UUID = "GenerationType.UUID";
    public static final String SEQUENCE = "GenerationType.SEQUENCE";
    public static final String TABLE = "GenerationType.TABLE";

    private static final Set STRATEGY_TYPES = getStrategyTypes();

    private String generator = null;
    private String strategy = null;

    public String getGenerator() {
        return generator;
    }

    public void setGenerator(String generator) {
        this.generator = generator;
    }

    public String getStrategy() {
        return strategy;
    }

    public void setStrategy(String startegy) {

        if (!STRATEGY_TYPES.contains(startegy)) {
            throw new IllegalArgumentException("Given type :" + startegy
                    + "Valid strategy types :" + STRATEGY_TYPES);
        }

        this.strategy = startegy;
    }

    @Override
    public String getSnippet() throws InvalidDataException {
        return annotate(
                GENERATED_VALUE,
                attribute("generator", generator),
                attributeExp("strategy", strategy)
        );
    }

    @Override
    public Collection getImportSnippets() throws InvalidDataException {
        Set imports = new HashSet<>();
        if (isNotBlank(strategy)) {
            imports.add(GENERATION_TYPE_FQN);
        }
        imports.add(GENERATED_VALUE_FQN);
        return imports;
    }

    private static Set getStrategyTypes() {
        Set strategyTypes = new HashSet<>();
        strategyTypes.add(AUTO);
        strategyTypes.add(IDENTITY);
        strategyTypes.add(UUID);
        strategyTypes.add(SEQUENCE);
        strategyTypes.add(TABLE);
        return strategyTypes;
    }
}