com.spoom.advise.SpringPhysicalNamingStrategy.java Source code

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Here is the source code for com.spoom.advise.SpringPhysicalNamingStrategy.java

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/*
 * Copyright 2012-2016 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.spoom.advise;

import java.util.Locale;

import org.hibernate.boot.model.naming.Identifier;
import org.hibernate.boot.model.naming.PhysicalNamingStrategy;
import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;

/**
 * Hibernate {@link PhysicalNamingStrategy} that follows Spring recommended naming
 * conventions.
 *
 * @author Phillip Webb
 * @since 1.4.0
 */
public class SpringPhysicalNamingStrategy implements PhysicalNamingStrategy {

    public Identifier toPhysicalCatalogName(Identifier name, JdbcEnvironment jdbcEnvironment) {
        return apply(name);
    }

    public Identifier toPhysicalSchemaName(Identifier name, JdbcEnvironment jdbcEnvironment) {
        return apply(name);
    }

    public Identifier toPhysicalTableName(Identifier name, JdbcEnvironment jdbcEnvironment) {
        return apply(name);
    }

    public Identifier toPhysicalSequenceName(Identifier name, JdbcEnvironment jdbcEnvironment) {
        return apply(name);
    }

    public Identifier toPhysicalColumnName(Identifier name, JdbcEnvironment jdbcEnvironment) {
        return apply(name);
    }

    private Identifier apply(Identifier name) {
        if (name == null) {
            return null;
        }
        StringBuilder text = new StringBuilder(name.getText().replace('.', '_'));
        for (int i = 1; i < text.length() - 1; i++) {
            if (isUnderscoreRequired(text.charAt(i - 1), text.charAt(i), text.charAt(i + 1))) {
                text.insert(i++, '_');
            }
        }
        return new Identifier(text.toString().toLowerCase(Locale.ROOT), name.isQuoted());
    }

    private boolean isUnderscoreRequired(char before, char current, char after) {
        return Character.isLowerCase(before) && Character.isUpperCase(current) && Character.isLowerCase(after);
    }

}