package com.example;

​

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

​

@SpringBootApplication

public class MySpringBootApp {

​

    public static void main(String[] args) { // (1)

        SpringApplication.run(MySpringBootApp.class, args);

    }

​

}

package com.marcobehler;

​

import org.springframework.context.annotation.Condition;

import org.springframework.context.annotation.ConditionContext;

import org.springframework.core.type.AnnotatedTypeMetadata;

​

public class IsRelationalDatabaseCondition implements Condition {

​

    @Override

    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {  // (1)

        return oracleJdbcDriverOnClassPath() && databaseUrlSet(context); // (2)

    }

​

    private boolean databaseUrlSet(ConditionContext context) { // (3)

        return context.getEnvironment().containsProperty("spring.datasource.url");

    }

​

    private boolean oracleJdbcDriverOnClassPath() { // (4)

        try {

            Class.forName("oracle.jdbc.driver.OracleDriver");

            return true;

        } catch (ClassNotFoundException e) {

            return false;

        }

    }

}

package com.marcobehler;

​

import org.springframework.context.annotation.Condition;

import org.springframework.context.annotation.ConditionContext;

import org.springframework.core.type.AnnotatedTypeMetadata;

​

public class IsRelationalDatabaseCondition implements Condition {

​

    @Override

    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {  // (1)

        return oracleJdbcDriverOnClassPath() && databaseUrlSet(context); // (2)

    }

​

    private boolean databaseUrlSet(ConditionContext context) { // (3)

        return context.getEnvironment().containsProperty("spring.datasource.url");

    }

​

    private boolean oracleJdbcDriverOnClassPath() { // (4)

        try {

            Class.forName("oracle.jdbc.driver.OracleDriver");

            return true;

        } catch (ClassNotFoundException e) {

            return false;

        }

    }

}