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Builds the hapi fhir base. Requires Common lang, commons-text, and guava be built first.
There is a newer version: 7.0.2-r12
/*
 * #%L
 * HAPI FHIR - Core Library
 * %%
 * Copyright (C) 2014 - 2024 Smile CDR, Inc.
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package ca.uhn.fhir.validation;

import ca.uhn.fhir.context.FhirContext;
import ca.uhn.fhir.rest.api.Constants;
import ca.uhn.fhir.util.OperationOutcomeUtil;
import org.hl7.fhir.instance.model.api.IBase;
import org.hl7.fhir.instance.model.api.IBaseOperationOutcome;

import java.util.Collections;
import java.util.List;

import static org.apache.commons.lang3.StringUtils.isBlank;
import static org.apache.commons.lang3.StringUtils.isNotBlank;

/**
 * Encapsulates the results of validation
 *
 * @see ca.uhn.fhir.validation.FhirValidator
 * @since 0.7
 */
public class ValidationResult {
	public static final int ERROR_DISPLAY_LIMIT_DEFAULT = 1;
	public static final String UNKNOWN = "(unknown)";
	private static final String ourNewLine = System.getProperty("line.separator");
	private final FhirContext myCtx;
	private final boolean myIsSuccessful;
	private final List myMessages;
	private int myErrorDisplayLimit = ERROR_DISPLAY_LIMIT_DEFAULT;

	public ValidationResult(FhirContext theCtx, List theMessages) {
		boolean successful = true;
		myCtx = theCtx;
		myMessages = theMessages;
		for (SingleValidationMessage next : myMessages) {
			if (next.getSeverity() == null || next.getSeverity().ordinal() > ResultSeverityEnum.WARNING.ordinal()) {
				successful = false;
				break;
			}
		}
		myIsSuccessful = successful;
	}

	public List getMessages() {
		return Collections.unmodifiableList(myMessages);
	}

	/**
	 * Was the validation successful (in other words, do we have no issues that are at
	 * severity {@link ResultSeverityEnum#ERROR} or {@link ResultSeverityEnum#FATAL}. A validation
	 * is still considered successful if it only has issues at level {@link ResultSeverityEnum#WARNING} or
	 * lower.
	 *
	 * @return true if the validation was successful
	 */
	public boolean isSuccessful() {
		return myIsSuccessful;
	}

	private String toDescription() {
		if (myMessages.isEmpty()) {
			return "No issues";
		}

		StringBuilder b = new StringBuilder(100 * myMessages.size());
		int shownMsgQty = Math.min(myErrorDisplayLimit, myMessages.size());

		if (shownMsgQty < myMessages.size()) {
			b.append("(showing first ")
					.append(shownMsgQty)
					.append(" messages out of ")
					.append(myMessages.size())
					.append(" total)")
					.append(ourNewLine);
		}

		for (int i = 0; i < shownMsgQty; i++) {
			SingleValidationMessage nextMsg = myMessages.get(i);
			b.append(ourNewLine);
			if (nextMsg.getSeverity() != null) {
				b.append(nextMsg.getSeverity().name());
				b.append(" - ");
			}
			b.append(nextMsg.getMessage());
			b.append(" - ");
			b.append(nextMsg.getLocationString());
		}

		return b.toString();
	}

	/**
	 * @deprecated Use {@link #toOperationOutcome()} instead since this method returns a view.
	 * {@link #toOperationOutcome()} is identical to this method, but has a more suitable name so this method
	 * will be removed at some point.
	 */
	@Deprecated
	public IBaseOperationOutcome getOperationOutcome() {
		return toOperationOutcome();
	}

	/**
	 * Create an OperationOutcome resource which contains all of the messages found as a result of this validation
	 */
	public IBaseOperationOutcome toOperationOutcome() {
		IBaseOperationOutcome oo = (IBaseOperationOutcome)
				myCtx.getResourceDefinition("OperationOutcome").newInstance();
		populateOperationOutcome(oo);
		return oo;
	}

	/**
	 * Populate an operation outcome with the results of the validation
	 */
	public void populateOperationOutcome(IBaseOperationOutcome theOperationOutcome) {
		for (SingleValidationMessage next : myMessages) {
			Integer locationLine = next.getLocationLine();
			Integer locationCol = next.getLocationCol();
			String location = next.getLocationString();
			ResultSeverityEnum issueSeverity = next.getSeverity();
			String message = next.getMessage();
			String messageId = next.getMessageId();

			if (next.getSliceMessages() == null) {
				addIssueToOperationOutcome(
						theOperationOutcome, location, locationLine, locationCol, issueSeverity, message, messageId);
				continue;
			}

			/*
			 * Occasionally the validator will return these lists of "slice messages"
			 * which happen when validating rules associated with a specific slice in
			 * a profile.
			 */
			for (String nextSliceMessage : next.getSliceMessages()) {
				String combinedMessage = message + " - " + nextSliceMessage;
				addIssueToOperationOutcome(
						theOperationOutcome,
						location,
						locationLine,
						locationCol,
						issueSeverity,
						combinedMessage,
						messageId);
			}
		} // for

		if (myMessages.isEmpty()) {
			String message = myCtx.getLocalizer().getMessage(ValidationResult.class, "noIssuesDetected");
			OperationOutcomeUtil.addIssue(myCtx, theOperationOutcome, "information", message, null, "informational");
		}
	}

	private void addIssueToOperationOutcome(
			IBaseOperationOutcome theOperationOutcome,
			String location,
			Integer locationLine,
			Integer locationCol,
			ResultSeverityEnum issueSeverity,
			String message,
			String messageId) {
		if (isBlank(location) && locationLine != null && locationCol != null) {
			location = "Line[" + locationLine + "] Col[" + locationCol + "]";
		}
		String severity = issueSeverity != null ? issueSeverity.getCode() : null;
		IBase issue = OperationOutcomeUtil.addIssueWithMessageId(
				myCtx, theOperationOutcome, severity, message, messageId, location, Constants.OO_INFOSTATUS_PROCESSING);

		if (locationLine != null || locationCol != null) {
			String unknown = UNKNOWN;
			String line = unknown;
			if (locationLine != null && locationLine != -1) {
				line = locationLine.toString();
			}
			String col = unknown;
			if (locationCol != null && locationCol != -1) {
				col = locationCol.toString();
			}
			if (!unknown.equals(line) || !unknown.equals(col)) {
				OperationOutcomeUtil.addIssueLineExtensionToIssue(myCtx, issue, line);
				OperationOutcomeUtil.addIssueColExtensionToIssue(myCtx, issue, col);
				String locationString = "Line[" + line + "] Col[" + col + "]";
				OperationOutcomeUtil.addLocationToIssue(myCtx, issue, locationString);
			}
		}

		if (isNotBlank(messageId)) {
			OperationOutcomeUtil.addMessageIdExtensionToIssue(myCtx, issue, messageId);
		}
	}

	@Override
	public String toString() {
		return "ValidationResult{" + "messageCount=" + myMessages.size() + ", isSuccessful=" + myIsSuccessful
				+ ", description='" + toDescription() + '\'' + '}';
	}

	/**
	 * @since 5.5.0
	 */
	public FhirContext getContext() {
		return myCtx;
	}

	public int getErrorDisplayLimit() {
		return myErrorDisplayLimit;
	}

	public void setErrorDisplayLimit(int theErrorDisplayLimit) {
		myErrorDisplayLimit = theErrorDisplayLimit;
	}
}