diff options
8 files changed, 89 insertions, 57 deletions
diff --git a/cps-dependencies/pom.xml b/cps-dependencies/pom.xml index 18ed43c993..24ae7de6a7 100755 --- a/cps-dependencies/pom.xml +++ b/cps-dependencies/pom.xml @@ -87,7 +87,7 @@ <dependency> <groupId>org.opendaylight.yangtools</groupId> <artifactId>yangtools-artifacts</artifactId> - <version>6.0.1</version> + <version>8.0.6</version> <type>pom</type> <scope>import</scope> </dependency> diff --git a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java index 400e9b3e83..8008e0324a 100755 --- a/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java +++ b/cps-ri/src/main/java/org/onap/cps/spi/impl/CpsModulePersistenceServiceImpl.java @@ -60,9 +60,9 @@ import org.onap.cps.spi.repository.ModuleReferenceRepository; import org.onap.cps.spi.repository.SchemaSetRepository; import org.onap.cps.spi.repository.YangResourceRepository; import org.opendaylight.yangtools.yang.common.Revision; -import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException; import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier; import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource; +import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException; import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangModelDependencyInfo; import org.springframework.dao.DataIntegrityViolationException; import org.springframework.retry.annotation.Backoff; @@ -252,6 +252,11 @@ public class CpsModulePersistenceServiceImpl implements CpsModulePersistenceServ final var tempYangTextSchemaSource = new YangTextSchemaSource(revisionSourceIdentifier) { @Override + public Optional<String> getSymbolicName() { + return Optional.empty(); + } + + @Override protected MoreObjects.ToStringHelper addToStringAttributes( final MoreObjects.ToStringHelper toStringHelper) { return toStringHelper; diff --git a/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java b/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java index 88ebe3bd01..b08d8c1eba 100755 --- a/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java +++ b/cps-service/src/main/java/org/onap/cps/api/impl/CpsDataServiceImpl.java @@ -226,11 +226,11 @@ public class CpsDataServiceImpl implements CpsDataService { final SchemaContext schemaContext = getSchemaContext(dataspaceName, anchor.getSchemaSetName()); if (ROOT_NODE_XPATH.equals(parentNodeXpath)) { - final NormalizedNode<?, ?> normalizedNode = YangUtils.parseJsonData(jsonData, schemaContext); + final NormalizedNode normalizedNode = YangUtils.parseJsonData(jsonData, schemaContext); return new DataNodeBuilder().withNormalizedNodeTree(normalizedNode).build(); } - final NormalizedNode<?, ?> normalizedNode = YangUtils.parseJsonData(jsonData, schemaContext, parentNodeXpath); + final NormalizedNode normalizedNode = YangUtils.parseJsonData(jsonData, schemaContext, parentNodeXpath); return new DataNodeBuilder() .withParentNodeXpath(parentNodeXpath) .withNormalizedNodeTree(normalizedNode) @@ -252,7 +252,7 @@ public class CpsDataServiceImpl implements CpsDataService { final Anchor anchor = cpsAdminService.getAnchor(dataspaceName, anchorName); final SchemaContext schemaContext = getSchemaContext(dataspaceName, anchor.getSchemaSetName()); - final NormalizedNode<?, ?> normalizedNode = YangUtils.parseJsonData(jsonData, schemaContext, parentNodeXpath); + final NormalizedNode normalizedNode = YangUtils.parseJsonData(jsonData, schemaContext, parentNodeXpath); final Collection<DataNode> dataNodes = new DataNodeBuilder() .withParentNodeXpath(parentNodeXpath) .withNormalizedNodeTree(normalizedNode) diff --git a/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java b/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java index f2bde03a01..eaa2d77f47 100644 --- a/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java +++ b/cps-service/src/main/java/org/onap/cps/spi/model/DataNodeBuilder.java @@ -44,7 +44,7 @@ import org.opendaylight.yangtools.yang.data.api.schema.ValueNode; @Slf4j public class DataNodeBuilder { - private NormalizedNode<?, ?> normalizedNodeTree; + private NormalizedNode normalizedNodeTree; private String xpath; private String moduleNamePrefix; private String parentNodeXpath = ""; @@ -69,7 +69,7 @@ public class DataNodeBuilder { * @param normalizedNodeTree used for creating the Data Node * @return this {@link DataNodeBuilder} object */ - public DataNodeBuilder withNormalizedNodeTree(final NormalizedNode<?, ?> normalizedNodeTree) { + public DataNodeBuilder withNormalizedNodeTree(final NormalizedNode normalizedNodeTree) { this.normalizedNodeTree = normalizedNodeTree; return this; } @@ -171,15 +171,16 @@ public class DataNodeBuilder { } private static void addDataNodeFromNormalizedNode(final DataNode currentDataNode, - final NormalizedNode<?, ?> normalizedNode) { + final NormalizedNode normalizedNode) { if (normalizedNode instanceof DataContainerNode) { - addYangContainer(currentDataNode, (DataContainerNode<?>) normalizedNode); + addYangContainer(currentDataNode, (DataContainerNode) normalizedNode); } else if (normalizedNode instanceof MapNode) { addDataNodeForEachListElement(currentDataNode, (MapNode) normalizedNode); } else if (normalizedNode instanceof ValueNode) { - final ValueNode<?, ?> valuesNode = (ValueNode<?, ?>) normalizedNode; - addYangLeaf(currentDataNode, valuesNode.getNodeType().getLocalName(), valuesNode.getValue()); + final ValueNode<NormalizedNode> valuesNode = (ValueNode) normalizedNode; + addYangLeaf(currentDataNode, valuesNode.getIdentifier().getNodeType().getLocalName(), + valuesNode.body()); } else if (normalizedNode instanceof LeafSetNode) { addYangLeafList(currentDataNode, (LeafSetNode<?>) normalizedNode); } else { @@ -187,13 +188,13 @@ public class DataNodeBuilder { } } - private static void addYangContainer(final DataNode currentDataNode, final DataContainerNode<?> dataContainerNode) { + private static void addYangContainer(final DataNode currentDataNode, final DataContainerNode dataContainerNode) { final DataNode dataContainerDataNode = (dataContainerNode.getIdentifier() instanceof YangInstanceIdentifier.AugmentationIdentifier) ? currentDataNode : createAndAddChildDataNode(currentDataNode, YangUtils.buildXpath(dataContainerNode.getIdentifier())); - final Collection<DataContainerChild<?, ?>> normalizedChildNodes = dataContainerNode.getValue(); - for (final NormalizedNode<?, ?> normalizedNode : normalizedChildNodes) { + final Collection<DataContainerChild> normalizedChildNodes = dataContainerNode.body(); + for (final NormalizedNode normalizedNode : normalizedChildNodes) { addDataNodeFromNormalizedNode(dataContainerDataNode, normalizedNode); } } @@ -207,16 +208,16 @@ public class DataNodeBuilder { } private static void addYangLeafList(final DataNode currentDataNode, final LeafSetNode<?> leafSetNode) { - final String leafListName = leafSetNode.getNodeType().getLocalName(); - final List<?> leafListValues = ((Collection<? extends NormalizedNode<?, ?>>) leafSetNode.getValue()) - .stream() - .map(normalizedNode -> ((ValueNode<?, ?>) normalizedNode).getValue()) - .collect(Collectors.toUnmodifiableList()); + final String leafListName = leafSetNode.getIdentifier().getNodeType().getLocalName(); + final List<?> leafListValues = ((Collection<? extends NormalizedNode>) leafSetNode.body()) + .stream() + .map(normalizedNode -> (normalizedNode).body()) + .collect(Collectors.toUnmodifiableList()); addYangLeaf(currentDataNode, leafListName, leafListValues); } private static void addDataNodeForEachListElement(final DataNode currentDataNode, final MapNode mapNode) { - final Collection<MapEntryNode> mapEntryNodes = mapNode.getValue(); + final Collection<MapEntryNode> mapEntryNodes = mapNode.body(); for (final MapEntryNode mapEntryNode : mapEntryNodes) { addDataNodeFromNormalizedNode(currentDataNode, mapEntryNode); } diff --git a/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java b/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java index 8fcdc4ebdb..48241ed392 100644 --- a/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java +++ b/cps-service/src/main/java/org/onap/cps/utils/YangUtils.java @@ -26,6 +26,7 @@ import com.google.gson.JsonSyntaxException; import com.google.gson.stream.JsonReader; import java.io.IOException; import java.io.StringReader; +import java.util.ArrayList; import java.util.Arrays; import java.util.Collection; import java.util.Collections; @@ -36,8 +37,11 @@ import lombok.AccessLevel; import lombok.NoArgsConstructor; import lombok.extern.slf4j.Slf4j; import org.onap.cps.spi.exceptions.DataValidationException; +import org.opendaylight.yangtools.yang.common.QName; import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier; import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode; +import org.opendaylight.yangtools.yang.data.api.schema.stream.NormalizedNodeStreamWriter; +import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactory; import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier; import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream; import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter; @@ -45,7 +49,10 @@ import org.opendaylight.yangtools.yang.data.impl.schema.NormalizedNodeResult; import org.opendaylight.yangtools.yang.model.api.DataNodeContainer; import org.opendaylight.yangtools.yang.model.api.DataSchemaNode; import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext; +import org.opendaylight.yangtools.yang.model.api.EffectiveStatementInference; import org.opendaylight.yangtools.yang.model.api.SchemaContext; +import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier; +import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack; @Slf4j @NoArgsConstructor(access = AccessLevel.PRIVATE) @@ -61,8 +68,7 @@ public class YangUtils { * @param schemaContext schema context describing associated data model * @return the NormalizedNode object */ - @SuppressWarnings("squid:S1452") // Generic type <? ,?> is returned by external librray, opendaylight.yangtools - public static NormalizedNode<?, ?> parseJsonData(final String jsonData, final SchemaContext schemaContext) { + public static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext) { return parseJsonData(jsonData, schemaContext, Optional.empty()); } @@ -74,32 +80,41 @@ public class YangUtils { * @param parentNodeXpath the xpath referencing the parent node current data fragment belong to * @return the NormalizedNode object */ - @SuppressWarnings("squid:S1452") // Generic type <? ,?> is returned by external librray, opendaylight.yangtools - public static NormalizedNode<?, ?> parseJsonData(final String jsonData, final SchemaContext schemaContext, + public static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext, final String parentNodeXpath) { - final var parentSchemaNode = getDataSchemaNodeByXpath(parentNodeXpath, schemaContext); - return parseJsonData(jsonData, schemaContext, Optional.of(parentSchemaNode)); + final Collection<QName> dataSchemaNodeIdentifiers = + getDataSchemaNodeIdentifiersByXpath(parentNodeXpath, schemaContext); + return parseJsonData(jsonData, schemaContext, Optional.of(dataSchemaNodeIdentifiers)); } - private static NormalizedNode<?, ?> parseJsonData(final String jsonData, final SchemaContext schemaContext, - final Optional<DataSchemaNode> optionalParentSchemaNode) { - final var jsonCodecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02 + private static NormalizedNode parseJsonData(final String jsonData, final SchemaContext schemaContext, + final Optional<Collection<QName>> dataSchemaNodeIdentifiers) { + final JSONCodecFactory jsonCodecFactory = JSONCodecFactorySupplier.DRAFT_LHOTKA_NETMOD_YANG_JSON_02 .getShared((EffectiveModelContext) schemaContext); - final var normalizedNodeResult = new NormalizedNodeResult(); - final var normalizedNodeStreamWriter = ImmutableNormalizedNodeStreamWriter + final NormalizedNodeResult normalizedNodeResult = new NormalizedNodeResult(); + final NormalizedNodeStreamWriter normalizedNodeStreamWriter = ImmutableNormalizedNodeStreamWriter .from(normalizedNodeResult); + final JsonReader jsonReader = new JsonReader(new StringReader(jsonData)); + final JsonParserStream jsonParserStream; + + if (dataSchemaNodeIdentifiers.isPresent()) { + final EffectiveModelContext effectiveModelContext = ((EffectiveModelContext) schemaContext); + final EffectiveStatementInference effectiveStatementInference = + SchemaInferenceStack.of(effectiveModelContext, + SchemaNodeIdentifier.Absolute.of(dataSchemaNodeIdentifiers.get())).toInference(); + jsonParserStream = + JsonParserStream.create(normalizedNodeStreamWriter, jsonCodecFactory, effectiveStatementInference); + } else { + jsonParserStream = JsonParserStream.create(normalizedNodeStreamWriter, jsonCodecFactory); + } - try (final JsonParserStream jsonParserStream = optionalParentSchemaNode.isPresent() - ? JsonParserStream.create(normalizedNodeStreamWriter, jsonCodecFactory, optionalParentSchemaNode.get()) - : JsonParserStream.create(normalizedNodeStreamWriter, jsonCodecFactory) - ) { - final var jsonReader = new JsonReader(new StringReader(jsonData)); + try { jsonParserStream.parse(jsonReader); - - } catch (final IOException | JsonSyntaxException exception) { + jsonParserStream.close(); + } catch (final JsonSyntaxException exception) { throw new DataValidationException( "Failed to parse json data: " + jsonData, exception.getMessage(), exception); - } catch (final IllegalStateException illegalStateException) { + } catch (final IOException | IllegalStateException illegalStateException) { throw new DataValidationException( "Failed to parse json data. Unsupported xpath or json data:" + jsonData, illegalStateException .getMessage(), illegalStateException); @@ -114,7 +129,7 @@ public class YangUtils { * @return an xpath */ public static String buildXpath(final YangInstanceIdentifier.PathArgument nodeIdentifier) { - final var xpathBuilder = new StringBuilder(); + final StringBuilder xpathBuilder = new StringBuilder(); xpathBuilder.append("/").append(nodeIdentifier.getNodeType().getLocalName()); if (nodeIdentifier instanceof YangInstanceIdentifier.NodeIdentifierWithPredicates) { @@ -143,10 +158,11 @@ public class YangUtils { } } - private static DataSchemaNode getDataSchemaNodeByXpath(final String parentNodeXpath, - final SchemaContext schemaContext) { + private static Collection<QName> getDataSchemaNodeIdentifiersByXpath(final String parentNodeXpath, + final SchemaContext schemaContext) { final String[] xpathNodeIdSequence = xpathToNodeIdSequence(parentNodeXpath); - return findDataSchemaNodeByXpathNodeIdSequence(xpathNodeIdSequence, schemaContext.getChildNodes()); + return findDataSchemaNodeIdentifiersByXpathNodeIdSequence(xpathNodeIdSequence, schemaContext.getChildNodes(), + new ArrayList<>()); } private static String[] xpathToNodeIdSequence(final String xpath) { @@ -161,25 +177,29 @@ public class YangUtils { return xpathNodeIdSequence; } - private static DataSchemaNode findDataSchemaNodeByXpathNodeIdSequence(final String[] xpathNodeIdSequence, - final Collection<? extends DataSchemaNode> dataSchemaNodes) { + private static Collection<QName> findDataSchemaNodeIdentifiersByXpathNodeIdSequence( + final String[] xpathNodeIdSequence, + final Collection<? extends DataSchemaNode> dataSchemaNodes, + final Collection<QName> dataSchemaNodeIdentifiers) { final String currentXpathNodeId = xpathNodeIdSequence[0]; final DataSchemaNode currentDataSchemaNode = dataSchemaNodes.stream() .filter(dataSchemaNode -> currentXpathNodeId.equals(dataSchemaNode.getQName().getLocalName())) .findFirst().orElseThrow(() -> schemaNodeNotFoundException(currentXpathNodeId)); + dataSchemaNodeIdentifiers.add(currentDataSchemaNode.getQName()); if (xpathNodeIdSequence.length <= 1) { - return currentDataSchemaNode; + return dataSchemaNodeIdentifiers; } if (currentDataSchemaNode instanceof DataNodeContainer) { - return findDataSchemaNodeByXpathNodeIdSequence( + return findDataSchemaNodeIdentifiersByXpathNodeIdSequence( getNextLevelXpathNodeIdSequence(xpathNodeIdSequence), - ((DataNodeContainer) currentDataSchemaNode).getChildNodes()); + ((DataNodeContainer) currentDataSchemaNode).getChildNodes(), + dataSchemaNodeIdentifiers); } throw schemaNodeNotFoundException(xpathNodeIdSequence[1]); } private static String[] getNextLevelXpathNodeIdSequence(final String[] xpathNodeIdSequence) { - final var nextXpathNodeIdSequence = new String[xpathNodeIdSequence.length - 1]; + final String[] nextXpathNodeIdSequence = new String[xpathNodeIdSequence.length - 1]; System.arraycopy(xpathNodeIdSequence, 1, nextXpathNodeIdSequence, 0, nextXpathNodeIdSequence.length); return nextXpathNodeIdSequence; } diff --git a/cps-service/src/main/java/org/onap/cps/yang/YangTextSchemaSourceSetBuilder.java b/cps-service/src/main/java/org/onap/cps/yang/YangTextSchemaSourceSetBuilder.java index fd534971a1..e0f24f3158 100644 --- a/cps-service/src/main/java/org/onap/cps/yang/YangTextSchemaSourceSetBuilder.java +++ b/cps-service/src/main/java/org/onap/cps/yang/YangTextSchemaSourceSetBuilder.java @@ -32,6 +32,7 @@ import java.nio.charset.StandardCharsets; import java.util.Collections; import java.util.List; import java.util.Map; +import java.util.Optional; import java.util.regex.Pattern; import java.util.stream.Collectors; import lombok.NoArgsConstructor; @@ -41,9 +42,9 @@ import org.onap.cps.spi.model.ModuleReference; import org.opendaylight.yangtools.yang.common.Revision; import org.opendaylight.yangtools.yang.model.api.Module; import org.opendaylight.yangtools.yang.model.api.SchemaContext; -import org.opendaylight.yangtools.yang.model.parser.api.YangSyntaxErrorException; import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier; import org.opendaylight.yangtools.yang.model.repo.api.YangTextSchemaSource; +import org.opendaylight.yangtools.yang.parser.api.YangSyntaxErrorException; import org.opendaylight.yangtools.yang.parser.rfc7950.reactor.RFC7950Reactors; import org.opendaylight.yangtools.yang.parser.rfc7950.repo.YangStatementStreamSource; import org.opendaylight.yangtools.yang.parser.spi.meta.ReactorException; @@ -155,6 +156,11 @@ public final class YangTextSchemaSourceSetBuilder { return new YangTextSchemaSource(revisionSourceIdentifier) { @Override + public Optional<String> getSymbolicName() { + return Optional.empty(); + } + + @Override protected MoreObjects.ToStringHelper addToStringAttributes( final MoreObjects.ToStringHelper toStringHelper) { return toStringHelper; diff --git a/cps-service/src/test/groovy/org/onap/cps/utils/JsonParserStreamSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/utils/JsonParserStreamSpec.groovy index 68f9251eb9..40f0e0a2ae 100644 --- a/cps-service/src/test/groovy/org/onap/cps/utils/JsonParserStreamSpec.groovy +++ b/cps-service/src/test/groovy/org/onap/cps/utils/JsonParserStreamSpec.groovy @@ -10,7 +10,7 @@ import org.opendaylight.yangtools.yang.data.codec.gson.JSONCodecFactorySupplier import org.opendaylight.yangtools.yang.data.codec.gson.JsonParserStream import org.opendaylight.yangtools.yang.data.impl.schema.Builders import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNormalizedNodeStreamWriter -import org.opendaylight.yangtools.yang.data.impl.schema.builder.api.DataContainerNodeBuilder +import org.opendaylight.yangtools.yang.data.api.schema.builder.DataContainerNodeBuilder import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext; import spock.lang.Specification import org.onap.cps.TestUtils @@ -38,10 +38,10 @@ class JsonParserStreamSpec extends Specification{ then: 'result is the correct size' result.size() == 2 then: 'data container child is a type of normalized node' - def dataContainerChild = result.getValue()[index] + def dataContainerChild = result.body().getAt(index) dataContainerChild instanceof NormalizedNode == true then: 'qualified name created is as expected' - dataContainerChild.nodeType == QName.create('org:onap:ccsdk:multiDataTree', '2020-09-15', nodeName) + dataContainerChild.identifier.nodeType == QName.create('org:onap:ccsdk:multiDataTree', '2020-09-15', nodeName) where: index | nodeName 0 | 'first-container' diff --git a/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy b/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy index 3f190910b1..65aa3af7d8 100644 --- a/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy +++ b/cps-service/src/test/groovy/org/onap/cps/utils/YangUtilsSpec.groovy @@ -1,6 +1,6 @@ /* * ============LICENSE_START======================================================= - * Copyright (C) 2020 Nordix Foundation + * Copyright (C) 2020-2022 Nordix Foundation * Modifications Copyright (C) 2021 Pantheon.tech * ================================================================================ * Licensed under the Apache License, Version 2.0 (the "License"); @@ -36,9 +36,9 @@ class YangUtilsSpec extends Specification { def yangResourceNameToContent = TestUtils.getYangResourcesAsMap('bookstore.yang') def schemaContext = YangTextSchemaSourceSetBuilder.of(yangResourceNameToContent).getSchemaContext() when: 'the json data is parsed' - NormalizedNode<?, ?> result = YangUtils.parseJsonData(jsonData, schemaContext) + NormalizedNode result = YangUtils.parseJsonData(jsonData, schemaContext) then: 'the result is a normalized node of the correct type' - result.nodeType == QName.create('org:onap:ccsdk:sample', '2020-09-15', 'bookstore') + result.getIdentifier().nodeType == QName.create('org:onap:ccsdk:sample', '2020-09-15', 'bookstore') } def 'Parsing invalid data: #description.'() { @@ -63,7 +63,7 @@ class YangUtilsSpec extends Specification { when: 'json string is parsed' def result = YangUtils.parseJsonData(jsonData, schemaContext, parentNodeXpath) then: 'result represents a node of expected type' - result.nodeType == QName.create('org:onap:cps:test:test-tree', '2020-02-02', nodeName) + result.getIdentifier().nodeType == QName.create('org:onap:cps:test:test-tree', '2020-02-02', nodeName) where: scenario | jsonData | parentNodeXpath || nodeName 'list element as container' | '{ "branch": { "name": "B", "nest": { "name": "N", "birds": ["bird"] } } }' | '/test-tree' || 'branch' |