io.github.linuxforhealth.hl7.expression.Hl7Expression Maven / Gradle / Ivy

/*
 * (C) Copyright IBM Corp. 2020
 *
 * SPDX-License-Identifier: Apache-2.0
 */

package io.github.linuxforhealth.hl7.expression;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.google.common.base.Preconditions;
import io.github.linuxforhealth.api.EvaluationResult;
import io.github.linuxforhealth.api.InputDataExtractor;
import io.github.linuxforhealth.api.Specification;
import io.github.linuxforhealth.core.expression.EvaluationResultFactory;
import io.github.linuxforhealth.hl7.data.SimpleDataTypeMapper;
import io.github.linuxforhealth.hl7.data.ValueExtractor;



/**
 * Represents the HL7 expression linuxforhealthch can generate the extraction string that HAPI
 * terser can evaluate. Supports the following structure 

 * 
 *
 * @author pbhallam
 */
@JsonIgnoreProperties(ignoreUnknown = true)
public class Hl7Expression extends AbstractExpression {
  private static final Logger LOGGER = LoggerFactory.getLogger(Hl7Expression.class);


  private List valueof;

  @JsonCreator
  public Hl7Expression(ExpressionAttributes expAttr) {
    super(expAttr);
    this.valueof = ExpressionAttributes.getSpecList(expAttr.getValueOf(), expAttr.isUseGroup(),
    expAttr.isGenerateMultiple());

  }

  @Override
  public EvaluationResult evaluateExpression(InputDataExtractor dataSource,
      Map contextValues, EvaluationResult baseValue) {
    Preconditions.checkArgument(dataSource != null, "dataSource cannot be null");
    Preconditions.checkArgument(contextValues != null, "contextValues cannot be null");


    List