com.joyveb.dbpimpl.cass.prepare.generator.ColumnChangeCqlGenerator.java Source code

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Here is the source code for com.joyveb.dbpimpl.cass.prepare.generator.ColumnChangeCqlGenerator.java

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/*
 * Copyright 2013 the original author or authors.
 * 
 * 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 com.joyveb.dbpimpl.cass.prepare.generator;

import org.springframework.util.Assert;

import com.joyveb.dbpimpl.cass.prepare.spec.ColumnChangeSpecification;

/**
 * Base class for column change CQL generators.
 * 
 * @author Matthew T. Adams
 * @param <T> The corresponding {@link ColumnChangeSpecification} type for this CQL generator.
 */
public abstract class ColumnChangeCqlGenerator<T extends ColumnChangeSpecification> {

    public abstract StringBuilder toCql(StringBuilder cql);

    private ColumnChangeSpecification specification;

    public ColumnChangeCqlGenerator(ColumnChangeSpecification specification) {
        setSpecification(specification);
    }

    protected void setSpecification(ColumnChangeSpecification specification) {
        Assert.notNull(specification);
        this.specification = specification;
    }

    @SuppressWarnings("unchecked")
    public T getSpecification() {
        return (T) specification;
    }

    protected T spec() {
        return getSpecification();
    }
}