com.sap.cloud.sdk.s4hana.connectivity.CachingErpCommand Maven / Gradle / Ivy

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/*
 * Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved.
 */

package com.sap.cloud.sdk.s4hana.connectivity;

import javax.annotation.Nonnull;

import com.sap.cloud.sdk.cloudplatform.cache.CacheKey;
import com.sap.cloud.sdk.frameworks.hystrix.CachingCommand;
import com.sap.cloud.sdk.frameworks.hystrix.HystrixUtil;

import lombok.Getter;

/**
 * Extends the {@link CachingCommand} to enable resilient execution and caching of results of S/4HANA queries.
 * Introduces a member for the {@link ErpConfigContext} to be used inside the command.
 */
public abstract class CachingErpCommand extends CachingCommand implements WithErpConfigContext
{
    /**
     * {@inheritDoc}
     */
    @Getter
    @Nonnull
    private final ErpConfigContext configContext;

    protected CachingErpCommand( @Nonnull final Setter setter )
    {
        this(setter, new ErpConfigContext());
    }

    protected CachingErpCommand( @Nonnull final Setter setter, @Nonnull final ErpConfigContext configContext )
    {
        super(setter);
        this.configContext = configContext;
    }

    protected CachingErpCommand( @Nonnull final Class commandType )
    {
        this(HystrixUtil.getDefaultErpCommandSetter(commandType));
    }

    protected CachingErpCommand( @Nonnull final Class commandType, @Nonnull final ErpConfigContext erpConfigContext )
    {
        this(HystrixUtil.getDefaultErpCommandSetter(commandType), erpConfigContext);
    }

    /**
     * {@inheritDoc}
     */
    @Nonnull
    @Override
    protected CacheKey getCommandCacheKey()
    {
        return super.getCommandCacheKey().append(getConfigContext());
    }
}