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A SpringBoot Starter solution designed to ensure easy and efficient integration with the Elrond Network using a Reactive API layer.

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package software.crldev.elrondspringbootstarterreactive.api;

import software.crldev.elrondspringbootstarterreactive.error.exception.ResponseException;
import static io.netty.util.internal.StringUtil.isNullOrEmpty;

/**
 * Base API response received from the Elrond proxy
 * with generic based on response type
 *
 * @author carlo_stanciu
 */
public class ApiResponse {
    private String error;
    private String code;
    private T data;

    /**
     * Method throws exception if the
     * api response code is other than successful
     */
    public void throwIfError() {
        if (!isNullOrEmpty(error)) throw new ResponseException(error);
        if (!code.equals("successful")) throw new ResponseException();
    }

    public ApiResponse() {
    }

    public String getError() {
        return this.error;
    }

    public String getCode() {
        return this.code;
    }

    public T getData() {
        return this.data;
    }

    public void setError(final String error) {
        this.error = error;
    }

    public void setCode(final String code) {
        this.code = code;
    }

    public void setData(final T data) {
        this.data = data;
    }

    @Override
    public boolean equals(final Object o) {
        if (o == this) return true;
        if (!(o instanceof ApiResponse)) return false;
        final ApiResponse other = (ApiResponse) o;
        if (!other.canEqual((Object) this)) return false;
        final Object this$error = this.getError();
        final Object other$error = other.getError();
        if (this$error == null ? other$error != null : !this$error.equals(other$error)) return false;
        final Object this$code = this.getCode();
        final Object other$code = other.getCode();
        if (this$code == null ? other$code != null : !this$code.equals(other$code)) return false;
        final Object this$data = this.getData();
        final Object other$data = other.getData();
        if (this$data == null ? other$data != null : !this$data.equals(other$data)) return false;
        return true;
    }

    protected boolean canEqual(final Object other) {
        return other instanceof ApiResponse;
    }

    @Override
    public int hashCode() {
        final int PRIME = 59;
        int result = 1;
        final Object $error = this.getError();
        result = result * PRIME + ($error == null ? 43 : $error.hashCode());
        final Object $code = this.getCode();
        result = result * PRIME + ($code == null ? 43 : $code.hashCode());
        final Object $data = this.getData();
        result = result * PRIME + ($data == null ? 43 : $data.hashCode());
        return result;
    }

    @Override
    public String toString() {
        return "ApiResponse(error=" + this.getError() + ", code=" + this.getCode() + ", data=" + this.getData() + ")";
    }
}