ca.uhn.fhir.jpa.dao.SearchParamExtractorDstu2.java Source code

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package ca.uhn.fhir.jpa.dao;

/*
 * #%L
 * HAPI FHIR JPA Server
 * %%
 * Copyright (C) 2014 - 2016 University Health Network
 * %%
 * 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%
 */
import static org.apache.commons.lang3.StringUtils.isBlank;
import static org.apache.commons.lang3.StringUtils.isNotBlank;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import javax.measure.quantity.Quantity;
import javax.measure.unit.NonSI;
import javax.measure.unit.Unit;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.tuple.Pair;
import org.hl7.fhir.instance.model.api.IBaseResource;

import ca.uhn.fhir.context.ConfigurationException;
import ca.uhn.fhir.context.FhirContext;
import ca.uhn.fhir.context.RuntimeResourceDefinition;
import ca.uhn.fhir.context.RuntimeSearchParam;
import ca.uhn.fhir.jpa.entity.BaseResourceIndexedSearchParam;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamCoords;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamDate;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamNumber;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamQuantity;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamString;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamToken;
import ca.uhn.fhir.jpa.entity.ResourceIndexedSearchParamUri;
import ca.uhn.fhir.jpa.entity.ResourceTable;
import ca.uhn.fhir.model.api.IDatatype;
import ca.uhn.fhir.model.api.IPrimitiveDatatype;
import ca.uhn.fhir.model.api.IValueSetEnumBinder;
import ca.uhn.fhir.model.base.composite.BaseHumanNameDt;
import ca.uhn.fhir.model.dstu2.composite.AddressDt;
import ca.uhn.fhir.model.dstu2.composite.BoundCodeableConceptDt;
import ca.uhn.fhir.model.dstu2.composite.CodeableConceptDt;
import ca.uhn.fhir.model.dstu2.composite.CodingDt;
import ca.uhn.fhir.model.dstu2.composite.ContactPointDt;
import ca.uhn.fhir.model.dstu2.composite.DurationDt;
import ca.uhn.fhir.model.dstu2.composite.HumanNameDt;
import ca.uhn.fhir.model.dstu2.composite.IdentifierDt;
import ca.uhn.fhir.model.dstu2.composite.PeriodDt;
import ca.uhn.fhir.model.dstu2.composite.QuantityDt;
import ca.uhn.fhir.model.dstu2.resource.Conformance.RestSecurity;
import ca.uhn.fhir.model.dstu2.resource.Location;
import ca.uhn.fhir.model.dstu2.resource.Patient;
import ca.uhn.fhir.model.dstu2.resource.Patient.Communication;
import ca.uhn.fhir.model.dstu2.resource.Questionnaire;
import ca.uhn.fhir.model.dstu2.resource.ValueSet;
import ca.uhn.fhir.model.dstu2.valueset.RestfulSecurityServiceEnum;
import ca.uhn.fhir.model.primitive.BaseDateTimeDt;
import ca.uhn.fhir.model.primitive.BoundCodeDt;
import ca.uhn.fhir.model.primitive.IntegerDt;
import ca.uhn.fhir.model.primitive.StringDt;
import ca.uhn.fhir.model.primitive.UriDt;
import ca.uhn.fhir.rest.method.RestSearchParameterTypeEnum;

public class SearchParamExtractorDstu2 extends BaseSearchParamExtractor implements ISearchParamExtractor {

    private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory
            .getLogger(SearchParamExtractorDstu2.class);

    private void addSearchTerm(ResourceTable theEntity, Set<ResourceIndexedSearchParamString> retVal,
            String resourceName, String searchTerm) {
        if (isBlank(searchTerm)) {
            return;
        }
        if (searchTerm.length() > ResourceIndexedSearchParamString.MAX_LENGTH) {
            searchTerm = searchTerm.substring(0, ResourceIndexedSearchParamString.MAX_LENGTH);
        }

        ResourceIndexedSearchParamString nextEntity = new ResourceIndexedSearchParamString(resourceName,
                BaseHapiFhirDao.normalizeString(searchTerm), searchTerm);
        nextEntity.setResource(theEntity);
        retVal.add(nextEntity);
    }

    private void addStringParam(ResourceTable theEntity, Set<BaseResourceIndexedSearchParam> retVal,
            RuntimeSearchParam nextSpDef, String value) {
        if (value.length() > ResourceIndexedSearchParamString.MAX_LENGTH) {
            value = value.substring(0, ResourceIndexedSearchParamString.MAX_LENGTH);
        }
        ResourceIndexedSearchParamString nextEntity = new ResourceIndexedSearchParamString(nextSpDef.getName(),
                BaseHapiFhirDao.normalizeString(value), value);
        nextEntity.setResource(theEntity);
        retVal.add(nextEntity);
    }

    @Override
    public Set<ResourceIndexedSearchParamCoords> extractSearchParamCoords(ResourceTable theEntity,
            IBaseResource theResource) {
        // TODO: implement
        return Collections.emptySet();
    }

    /*
     * (non-Javadoc)
     * 
     * @see ca.uhn.fhir.jpa.dao.ISearchParamExtractor#extractSearchParamDates(ca.uhn.fhir.jpa.entity.ResourceTable,
     * ca.uhn.fhir.model.api.IResource)
     */
    @Override
    public Set<ResourceIndexedSearchParamDate> extractSearchParamDates(ResourceTable theEntity,
            IBaseResource theResource) {
        HashSet<ResourceIndexedSearchParamDate> retVal = new HashSet<ResourceIndexedSearchParamDate>();

        RuntimeResourceDefinition def = getContext().getResourceDefinition(theResource);
        for (RuntimeSearchParam nextSpDef : def.getSearchParams()) {
            if (nextSpDef.getParamType() != RestSearchParameterTypeEnum.DATE) {
                continue;
            }

            String nextPath = nextSpDef.getPath();
            if (isBlank(nextPath)) {
                continue;
            }

            boolean multiType = false;
            if (nextPath.endsWith("[x]")) {
                multiType = true;
            }

            for (Object nextObject : extractValues(nextPath, theResource)) {
                if (nextObject == null) {
                    continue;
                }

                ResourceIndexedSearchParamDate nextEntity;
                if (nextObject instanceof BaseDateTimeDt) {
                    BaseDateTimeDt nextValue = (BaseDateTimeDt) nextObject;
                    if (nextValue.isEmpty()) {
                        continue;
                    }
                    nextEntity = new ResourceIndexedSearchParamDate(nextSpDef.getName(), nextValue.getValue(),
                            nextValue.getValue());
                } else if (nextObject instanceof PeriodDt) {
                    PeriodDt nextValue = (PeriodDt) nextObject;
                    if (nextValue.isEmpty()) {
                        continue;
                    }
                    nextEntity = new ResourceIndexedSearchParamDate(nextSpDef.getName(), nextValue.getStart(),
                            nextValue.getEnd());
                } else {
                    if (!multiType) {
                        throw new ConfigurationException("Search param " + nextSpDef.getName()
                                + " is of unexpected datatype: " + nextObject.getClass());
                    } else {
                        continue;
                    }
                }
                if (nextEntity != null) {
                    nextEntity.setResource(theEntity);
                    retVal.add(nextEntity);
                }
            }
        }

        return retVal;
    }

    /*
     * (non-Javadoc)
     * 
     * @see ca.uhn.fhir.jpa.dao.ISearchParamExtractor#extractSearchParamNumber(ca.uhn.fhir.jpa.entity.ResourceTable,
     * ca.uhn.fhir.model.api.IResource)
     */
    @Override
    public HashSet<ResourceIndexedSearchParamNumber> extractSearchParamNumber(ResourceTable theEntity,
            IBaseResource theResource) {
        HashSet<ResourceIndexedSearchParamNumber> retVal = new HashSet<ResourceIndexedSearchParamNumber>();

        RuntimeResourceDefinition def = getContext().getResourceDefinition(theResource);
        for (RuntimeSearchParam nextSpDef : def.getSearchParams()) {
            if (nextSpDef.getParamType() != RestSearchParameterTypeEnum.NUMBER) {
                continue;
            }

            String nextPath = nextSpDef.getPath();
            if (isBlank(nextPath)) {
                continue;
            }

            for (Object nextObject : extractValues(nextPath, theResource)) {
                if (nextObject == null || ((IDatatype) nextObject).isEmpty()) {
                    continue;
                }

                String resourceName = nextSpDef.getName();
                boolean multiType = false;
                if (nextPath.endsWith("[x]")) {
                    multiType = true;
                }

                if (nextObject instanceof DurationDt) {
                    DurationDt nextValue = (DurationDt) nextObject;
                    if (nextValue.getValueElement().isEmpty()) {
                        continue;
                    }

                    if (new UriDt(BaseHapiFhirDao.UCUM_NS).equals(nextValue.getSystemElement())) {
                        if (isNotBlank(nextValue.getCode())) {

                            Unit<? extends Quantity> unit = Unit.valueOf(nextValue.getCode());
                            javax.measure.converter.UnitConverter dayConverter = unit.getConverterTo(NonSI.DAY);
                            double dayValue = dayConverter.convert(nextValue.getValue().doubleValue());
                            DurationDt newValue = new DurationDt();
                            newValue.setSystem(BaseHapiFhirDao.UCUM_NS);
                            newValue.setCode(NonSI.DAY.toString());
                            newValue.setValue(dayValue);
                            nextValue = newValue;

                            /*
                             * @SuppressWarnings("unchecked") PhysicsUnit<? extends
                             * org.unitsofmeasurement.quantity.Quantity<?>> unit = (PhysicsUnit<? extends
                             * org.unitsofmeasurement.quantity.Quantity<?>>)
                             * UCUMFormat.getCaseInsensitiveInstance().parse(nextValue.getCode().getValue(), null); if
                             * (unit.isCompatible(UCUM.DAY)) {
                             * 
                             * @SuppressWarnings("unchecked") PhysicsUnit<org.unitsofmeasurement.quantity.Time> timeUnit =
                             * (PhysicsUnit<Time>) unit; UnitConverter conv = timeUnit.getConverterTo(UCUM.DAY); double
                             * dayValue = conv.convert(nextValue.getValue().getValue().doubleValue()); DurationDt newValue =
                             * new DurationDt(); newValue.setSystem(UCUM_NS); newValue.setCode(UCUM.DAY.getSymbol());
                             * newValue.setValue(dayValue); nextValue=newValue; }
                             */
                        }
                    }

                    ResourceIndexedSearchParamNumber nextEntity = new ResourceIndexedSearchParamNumber(resourceName,
                            nextValue.getValue());
                    nextEntity.setResource(theEntity);
                    retVal.add(nextEntity);
                } else if (nextObject instanceof QuantityDt) {
                    QuantityDt nextValue = (QuantityDt) nextObject;
                    if (nextValue.getValueElement().isEmpty()) {
                        continue;
                    }

                    ResourceIndexedSearchParamNumber nextEntity = new ResourceIndexedSearchParamNumber(resourceName,
                            nextValue.getValue());
                    nextEntity.setResource(theEntity);
                    retVal.add(nextEntity);
                } else if (nextObject instanceof IntegerDt) {
                    IntegerDt nextValue = (IntegerDt) nextObject;
                    if (nextValue.getValue() == null) {
                        continue;
                    }

                    ResourceIndexedSearchParamNumber nextEntity = new ResourceIndexedSearchParamNumber(resourceName,
                            new BigDecimal(nextValue.getValue()));
                    nextEntity.setResource(theEntity);
                    retVal.add(nextEntity);
                } else {
                    if (!multiType) {
                        throw new ConfigurationException("Search param " + resourceName
                                + " is of unexpected datatype: " + nextObject.getClass());
                    } else {
                        continue;
                    }
                }
            }
        }

        return retVal;
    }

    /*
     * (non-Javadoc)
     * 
     * @see ca.uhn.fhir.jpa.dao.ISearchParamExtractor#extractSearchParamQuantity(ca.uhn.fhir.jpa.entity.ResourceTable,
     * ca.uhn.fhir.model.api.IResource)
     */
    @Override
    public Set<ResourceIndexedSearchParamQuantity> extractSearchParamQuantity(ResourceTable theEntity,
            IBaseResource theResource) {
        HashSet<ResourceIndexedSearchParamQuantity> retVal = new HashSet<ResourceIndexedSearchParamQuantity>();

        RuntimeResourceDefinition def = getContext().getResourceDefinition(theResource);
        for (RuntimeSearchParam nextSpDef : def.getSearchParams()) {
            if (nextSpDef.getParamType() != RestSearchParameterTypeEnum.QUANTITY) {
                continue;
            }

            String nextPath = nextSpDef.getPath();
            if (isBlank(nextPath)) {
                continue;
            }

            for (Object nextObject : extractValues(nextPath, theResource)) {
                if (nextObject == null || ((IDatatype) nextObject).isEmpty()) {
                    continue;
                }

                String resourceName = nextSpDef.getName();
                boolean multiType = false;
                if (nextPath.endsWith("[x]")) {
                    multiType = true;
                }

                if (nextObject instanceof QuantityDt) {
                    QuantityDt nextValue = (QuantityDt) nextObject;
                    if (nextValue.getValueElement().isEmpty()) {
                        continue;
                    }

                    ResourceIndexedSearchParamQuantity nextEntity = new ResourceIndexedSearchParamQuantity(
                            resourceName, nextValue.getValueElement().getValue(),
                            nextValue.getSystemElement().getValueAsString(), nextValue.getCode());
                    nextEntity.setResource(theEntity);
                    retVal.add(nextEntity);
                } else {
                    if (!multiType) {
                        throw new ConfigurationException("Search param " + resourceName
                                + " is of unexpected datatype: " + nextObject.getClass());
                    } else {
                        continue;
                    }
                }
            }
        }

        return retVal;
    }

    /*
     * (non-Javadoc)
     * 
     * @see ca.uhn.fhir.jpa.dao.ISearchParamExtractor#extractSearchParamStrings(ca.uhn.fhir.jpa.entity.ResourceTable,
     * ca.uhn.fhir.model.api.IResource)
     */
    @Override
    public Set<ResourceIndexedSearchParamString> extractSearchParamStrings(ResourceTable theEntity,
            IBaseResource theResource) {
        HashSet<ResourceIndexedSearchParamString> retVal = new HashSet<ResourceIndexedSearchParamString>();

        RuntimeResourceDefinition def = getContext().getResourceDefinition(theResource);
        for (RuntimeSearchParam nextSpDef : def.getSearchParams()) {
            if (nextSpDef.getParamType() != RestSearchParameterTypeEnum.STRING) {
                continue;
            }

            String nextPath = nextSpDef.getPath();
            String resourceName = nextSpDef.getName();

            if (isBlank(nextPath)) {

                // TODO: implement phonetic, and any others that have no path

                if ("Questionnaire".equals(def.getName()) && nextSpDef.getName().equals("title")) {
                    Questionnaire q = (Questionnaire) theResource;
                    String title = q.getGroup().getTitle();
                    addSearchTerm(theEntity, retVal, resourceName, title);
                }
                continue;
            }

            for (Object nextObject : extractValues(nextPath, theResource)) {
                if (nextObject == null || ((IDatatype) nextObject).isEmpty()) {
                    continue;
                }

                boolean multiType = false;
                if (nextPath.endsWith("[x]")) {
                    multiType = true;
                }

                if (nextObject instanceof IPrimitiveDatatype<?>) {
                    IPrimitiveDatatype<?> nextValue = (IPrimitiveDatatype<?>) nextObject;
                    String searchTerm = nextValue.getValueAsString();
                    addSearchTerm(theEntity, retVal, resourceName, searchTerm);
                } else {
                    if (nextObject instanceof BaseHumanNameDt) {
                        ArrayList<StringDt> allNames = new ArrayList<StringDt>();
                        HumanNameDt nextHumanName = (HumanNameDt) nextObject;
                        allNames.addAll(nextHumanName.getFamily());
                        allNames.addAll(nextHumanName.getGiven());
                        for (StringDt nextName : allNames) {
                            addSearchTerm(theEntity, retVal, resourceName, nextName.getValue());
                        }
                    } else if (nextObject instanceof AddressDt) {
                        ArrayList<StringDt> allNames = new ArrayList<StringDt>();
                        AddressDt nextAddress = (AddressDt) nextObject;
                        allNames.addAll(nextAddress.getLine());
                        allNames.add(nextAddress.getCityElement());
                        allNames.add(nextAddress.getStateElement());
                        allNames.add(nextAddress.getCountryElement());
                        allNames.add(nextAddress.getPostalCodeElement());
                        for (StringDt nextName : allNames) {
                            addSearchTerm(theEntity, retVal, resourceName, nextName.getValue());
                        }
                    } else if (nextObject instanceof ContactPointDt) {
                        ContactPointDt nextContact = (ContactPointDt) nextObject;
                        if (nextContact.getValueElement().isEmpty() == false) {
                            addSearchTerm(theEntity, retVal, resourceName, nextContact.getValue());
                        }
                    } else {
                        if (!multiType) {
                            throw new ConfigurationException("Search param " + resourceName
                                    + " is of unexpected datatype: " + nextObject.getClass());
                        }
                    }
                }
            }
        }

        return retVal;
    }

    /*
     * (non-Javadoc)
     * 
     * @see ca.uhn.fhir.jpa.dao.ISearchParamExtractor#extractSearchParamTokens(ca.uhn.fhir.jpa.entity.ResourceTable,
     * ca.uhn.fhir.model.api.IResource)
     */
    @Override
    public Set<BaseResourceIndexedSearchParam> extractSearchParamTokens(ResourceTable theEntity,
            IBaseResource theResource) {
        HashSet<BaseResourceIndexedSearchParam> retVal = new HashSet<BaseResourceIndexedSearchParam>();

        String useSystem = null;
        if (theResource instanceof ValueSet) {
            ValueSet vs = (ValueSet) theResource;
            useSystem = vs.getCodeSystem().getSystem();
        }

        RuntimeResourceDefinition def = getContext().getResourceDefinition(theResource);
        for (RuntimeSearchParam nextSpDef : def.getSearchParams()) {
            if (nextSpDef.getParamType() != RestSearchParameterTypeEnum.TOKEN) {
                continue;
            }

            String nextPath = nextSpDef.getPath();
            if (isBlank(nextPath)) {
                continue;
            }

            boolean multiType = false;
            if (nextPath.endsWith("[x]")) {
                multiType = true;
            }

            List<String> systems = new ArrayList<String>();
            List<String> codes = new ArrayList<String>();

            String needContactPointSystem = null;
            if (nextPath.endsWith("(system=phone)")) {
                nextPath = nextPath.substring(0, nextPath.length() - "(system=phone)".length());
                needContactPointSystem = "phone";
            }
            if (nextPath.endsWith("(system=email)")) {
                nextPath = nextPath.substring(0, nextPath.length() - "(system=email)".length());
                needContactPointSystem = "email";
            }

            for (Object nextObject : extractValues(nextPath, theResource)) {

                // Patient:language
                if (nextObject instanceof Patient.Communication) {
                    Communication nextValue = (Patient.Communication) nextObject;
                    nextObject = nextValue.getLanguage();
                }

                if (nextObject instanceof IdentifierDt) {
                    IdentifierDt nextValue = (IdentifierDt) nextObject;
                    if (nextValue.isEmpty()) {
                        continue;
                    }
                    String system = StringUtils.defaultIfBlank(nextValue.getSystemElement().getValueAsString(),
                            null);
                    String value = nextValue.getValueElement().getValue();
                    if (isNotBlank(value)) {
                        systems.add(system);
                        codes.add(value);
                    }

                    if (isNotBlank(nextValue.getType().getText())) {
                        addStringParam(theEntity, retVal, nextSpDef, nextValue.getType().getText());
                    }

                } else if (nextObject instanceof ContactPointDt) {
                    ContactPointDt nextValue = (ContactPointDt) nextObject;
                    if (nextValue.isEmpty()) {
                        continue;
                    }
                    if (isNotBlank(needContactPointSystem)) {
                        if (!needContactPointSystem.equals(nextValue.getSystemElement().getValueAsString())) {
                            continue;
                        }
                    }
                    systems.add(nextValue.getSystemElement().getValueAsString());
                    codes.add(nextValue.getValueElement().getValue());
                } else if (nextObject instanceof BoundCodeDt) {
                    BoundCodeDt<?> obj = (BoundCodeDt<?>) nextObject;
                    String system = extractSystem(obj);
                    String code = obj.getValue();
                    if (isNotBlank(code)) {
                        systems.add(system);
                        codes.add(code);
                    }
                } else if (nextObject instanceof IPrimitiveDatatype<?>) {
                    IPrimitiveDatatype<?> nextValue = (IPrimitiveDatatype<?>) nextObject;
                    if (nextValue.isEmpty()) {
                        continue;
                    }
                    if ("ValueSet.codeSystem.concept.code".equals(nextPath)) {
                        systems.add(useSystem);
                    } else {
                        systems.add(null);
                    }
                    codes.add(nextValue.getValueAsString());
                } else if (nextObject instanceof CodingDt) {
                    CodingDt nextValue = (CodingDt) nextObject;
                    extractTokensFromCoding(systems, codes, theEntity, retVal, nextSpDef, nextValue);
                } else if (nextObject instanceof CodeableConceptDt) {
                    CodeableConceptDt nextCC = (CodeableConceptDt) nextObject;
                    if (!nextCC.getTextElement().isEmpty()) {
                        addStringParam(theEntity, retVal, nextSpDef, nextCC.getTextElement().getValue());
                    }

                    extractTokensFromCodeableConcept(systems, codes, nextCC, theEntity, retVal, nextSpDef);
                } else if (nextObject instanceof RestSecurity) {
                    // Conformance.security search param points to something kind of useless right now - This should probably
                    // be fixed.
                    RestSecurity sec = (RestSecurity) nextObject;
                    for (BoundCodeableConceptDt<RestfulSecurityServiceEnum> nextCC : sec.getService()) {
                        extractTokensFromCodeableConcept(systems, codes, nextCC, theEntity, retVal, nextSpDef);
                    }
                } else if (nextObject instanceof Location.Position) {
                    ourLog.warn("Position search not currently supported, not indexing location");
                    continue;
                } else {
                    if (!multiType) {
                        throw new ConfigurationException("Search param " + nextSpDef.getName()
                                + " is of unexpected datatype: " + nextObject.getClass());
                    } else {
                        continue;
                    }
                }
            }

            assert systems.size() == codes.size() : "Systems contains " + systems + ", codes contains: " + codes;

            Set<Pair<String, String>> haveValues = new HashSet<Pair<String, String>>();
            for (int i = 0; i < systems.size(); i++) {
                String system = systems.get(i);
                String code = codes.get(i);
                if (isBlank(system) && isBlank(code)) {
                    continue;
                }

                if (system != null && system.length() > ResourceIndexedSearchParamToken.MAX_LENGTH) {
                    system = system.substring(0, ResourceIndexedSearchParamToken.MAX_LENGTH);
                }
                if (code != null && code.length() > ResourceIndexedSearchParamToken.MAX_LENGTH) {
                    code = code.substring(0, ResourceIndexedSearchParamToken.MAX_LENGTH);
                }

                Pair<String, String> nextPair = Pair.of(system, code);
                if (haveValues.contains(nextPair)) {
                    continue;
                }
                haveValues.add(nextPair);

                ResourceIndexedSearchParamToken nextEntity;
                nextEntity = new ResourceIndexedSearchParamToken(nextSpDef.getName(), system, code);
                nextEntity.setResource(theEntity);
                retVal.add(nextEntity);

            }

        }

        return retVal;
    }

    @Override
    public Set<ResourceIndexedSearchParamUri> extractSearchParamUri(ResourceTable theEntity,
            IBaseResource theResource) {
        HashSet<ResourceIndexedSearchParamUri> retVal = new HashSet<ResourceIndexedSearchParamUri>();

        RuntimeResourceDefinition def = getContext().getResourceDefinition(theResource);
        for (RuntimeSearchParam nextSpDef : def.getSearchParams()) {
            if (nextSpDef.getParamType() != RestSearchParameterTypeEnum.URI) {
                continue;
            }

            String nextPath = nextSpDef.getPath();
            if (isBlank(nextPath)) {
                continue;
            }

            for (Object nextObject : extractValues(nextPath, theResource)) {
                if (nextObject == null || ((IDatatype) nextObject).isEmpty()) {
                    continue;
                }

                String resourceName = nextSpDef.getName();
                boolean multiType = false;
                if (nextPath.endsWith("[x]")) {
                    multiType = true;
                }

                if (nextObject instanceof UriDt) {
                    UriDt nextValue = (UriDt) nextObject;
                    if (isBlank(nextValue.getValue())) {
                        continue;
                    }

                    ourLog.trace("Adding param: {}, {}", resourceName, nextValue.getValue());

                    ResourceIndexedSearchParamUri nextEntity = new ResourceIndexedSearchParamUri(resourceName,
                            nextValue.getValue());

                    nextEntity.setResource(theEntity);
                    retVal.add(nextEntity);
                } else {
                    if (!multiType) {
                        throw new ConfigurationException("Search param " + resourceName
                                + " is of unexpected datatype: " + nextObject.getClass());
                    } else {
                        continue;
                    }
                }
            }
        }

        return retVal;
    }

    private void extractTokensFromCodeableConcept(List<String> theSystems, List<String> theCodes,
            CodeableConceptDt theCodeableConcept, ResourceTable theEntity,
            Set<BaseResourceIndexedSearchParam> theListToPopulate, RuntimeSearchParam theParameterDef) {
        for (CodingDt nextCoding : theCodeableConcept.getCoding()) {
            extractTokensFromCoding(theSystems, theCodes, theEntity, theListToPopulate, theParameterDef,
                    nextCoding);
        }
    }

    private void extractTokensFromCoding(List<String> theSystems, List<String> theCodes, ResourceTable theEntity,
            Set<BaseResourceIndexedSearchParam> theListToPopulate, RuntimeSearchParam theParameterDef,
            CodingDt nextCoding) {
        if (nextCoding != null && !nextCoding.isEmpty()) {

            String nextSystem = nextCoding.getSystemElement().getValueAsString();
            String nextCode = nextCoding.getCodeElement().getValue();
            if (isNotBlank(nextSystem) || isNotBlank(nextCode)) {
                theSystems.add(nextSystem);
                theCodes.add(nextCode);
            }

            if (!nextCoding.getDisplayElement().isEmpty()) {
                addStringParam(theEntity, theListToPopulate, theParameterDef,
                        nextCoding.getDisplayElement().getValue());
            }

        }
    }

    private static <T extends Enum<?>> String extractSystem(BoundCodeDt<T> theBoundCode) {
        if (theBoundCode.getValueAsEnum() != null) {
            IValueSetEnumBinder<T> binder = theBoundCode.getBinder();
            return binder.toSystemString(theBoundCode.getValueAsEnum());
        }
        return null;
    }

}