PostgresErrorClassifier.java

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package dev.rafex.ether.database.postgres.errors;
 
/*-
 * #%L
 * ether-database-postgres
 * %%
 * Copyright (C) 2025 - 2026 Raúl Eduardo González Argote
 * %%
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 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
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 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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import java.sql.SQLException;
import java.util.Objects;
 
public final class PostgresErrorClassifier {
 
    public enum Category {
        UNIQUE_VIOLATION, FOREIGN_KEY_VIOLATION, NOT_NULL_VIOLATION, CHECK_VIOLATION, CONCURRENCY_CONFLICT, OTHER
    }
 
    private PostgresErrorClassifier() {
    }
 
    public static Category classify(final SQLException exception) {
        Objects.requireNonNull(exception, "exception");
        final String state = exception.getSQLState();
        if (PostgresSqlStates.UNIQUE_VIOLATION.equals(state)) {
            return Category.UNIQUE_VIOLATION;
        }
        if (PostgresSqlStates.FOREIGN_KEY_VIOLATION.equals(state)) {
            return Category.FOREIGN_KEY_VIOLATION;
        }
        if (PostgresSqlStates.NOT_NULL_VIOLATION.equals(state)) {
            return Category.NOT_NULL_VIOLATION;
        }
        if (PostgresSqlStates.CHECK_VIOLATION.equals(state)) {
            return Category.CHECK_VIOLATION;
        }
        if (PostgresSqlStates.SERIALIZATION_FAILURE.equals(state)
                || PostgresSqlStates.DEADLOCK_DETECTED.equals(state)) {
            return Category.CONCURRENCY_CONFLICT;
        }
        return Category.OTHER;
    }
}