Examples of com.fasterxml.jackson.databind.JsonNode

com.fasterxml.jackson.databind.JsonNode
Base class for all JSON nodes, which form the basis of JSON Tree Model that Jackson implements. One way to think of these nodes is to consider them similar to DOM nodes in XML DOM trees.
As a general design rule, most accessors ("getters") are included in this base class, to allow for traversing structure without type casts. Most mutators, however, need to be accessed through specific sub-classes (such as ObjectNode and ArrayNode). This seems sensible because proper type information is generally available when building or modifying trees, but less often when reading a tree (newly built from parsed JSON content).
Actual concrete sub-classes can be found from package {@link com.fasterxml.jackson.databind.node}.

    private String getType(final JsonNode node, final String name) {
        final Iterator<Map.Entry<String, JsonNode>> iter = node.fields();
        while (iter.hasNext()) {
            final Map.Entry<String, JsonNode> entry = iter.next();
            if (entry.getKey().equalsIgnoreCase("type")) {
                final JsonNode n = entry.getValue();
                if (n.isValueNode()) {
                    return n.asText();
                }
            }
        }
        return name;
    }

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            if ( searchResponse.getStatus() != Response.Status.OK.getStatusCode() )
            {
                reportErrors( searchResponse );
            }


            JsonNode issueTree = getResponseTree( searchResponse );
            assert issueTree.isObject();
            JsonNode issuesNode = issueTree.get( "issues" );
            assert issuesNode.isArray();
            buildIssues( issuesNode, jiraUrl, jiraProject );
        }
        finally
        {
            Thread.currentThread().setContextClassLoader( ccl );

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    private void reportErrors( Response resp )
        throws IOException, MojoExecutionException
    {
        if ( MediaType.APPLICATION_JSON_TYPE.getType().equals( getResponseMediaType( resp ).getType() ) )
        {
            JsonNode errorTree = getResponseTree( resp );
            assert errorTree.isObject();
            JsonNode messages = errorTree.get( "errorMessages" );
            if ( messages != null )
            {
                for ( int mx = 0; mx < messages.size(); mx ++ )
                {
                    getLog().error( messages.get( mx ).asText() );
                }
            }
            else
            {
                JsonNode message = errorTree.get( "message" );
                if ( message != null )
                {
                    getLog().error( message.asText() );
                }
            }
        }
        throw new MojoExecutionException( String.format( "Failed to query issues; response %d", resp.getStatus() ) );
    }

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        {
            getLog().error( String.format( "Could not get %s list from %s", what, listRestUrlPattern ) );
            reportErrors( resp );
        }


        JsonNode items = getResponseTree( resp );
        String[] pieces = input.split( "," );
        for ( String item : pieces )
        {
            targetList.add( resolveOneItem( items, what, item ) );
        }

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    private String resolveOneItem( JsonNode items, String what, String nameOrId )
        throws IOException, MojoExecutionException, MojoFailureException
    {
        for ( int cx = 0; cx < items.size(); cx ++ )
        {
            JsonNode item = items.get( cx );
            if ( nameOrId.equals( item.get( "id" ).asText() ) )
            {
                return nameOrId;
            }
            else if ( nameOrId.equals( item.get( "name" ).asText() ) )
            {
                return item.get( "id" ).asText();
            }
        }
        throw new MojoFailureException( String.format( "Could not find %s %s.", what, nameOrId ) );
    }

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    private void buildIssues( JsonNode issuesNode, String jiraUrl, String jiraProject )
    {
        issueList = new ArrayList<Issue>(  );
        for ( int ix = 0; ix < issuesNode.size(); ix++ )
        {
            JsonNode issueNode = issuesNode.get( ix );
            assert issueNode.isObject();
            Issue issue = new Issue();
            JsonNode val;


            val = issueNode.get( "id" );
            if ( val != null )
            {
                issue.setId( val.asText() );
            }


            val = issueNode.get( "key" );
            if ( val != null )
            {
                issue.setKey( val.asText() );
                issue.setLink( String.format( "%s/browse/%s", jiraUrl, val.asText() ) );
            }


            // much of what we want is in here.
            JsonNode fieldsNode = issueNode.get( "fields" );


            val = fieldsNode.get( "assignee" );
            processAssignee( issue, val );


            val = fieldsNode.get( "created" );
            processCreated( issue, val );


            val = fieldsNode.get( "comment" );
            processComments( issue, val );


            val = fieldsNode.get( "components" );
            processComponents( issue, val );


            val = fieldsNode.get( "fixVersions" );
            processFixVersions( issue, val );


            val = fieldsNode.get( "issuetype" );
            processIssueType( issue, val );


            val = fieldsNode.get( "priority" );
            processPriority( issue, val );


            val = fieldsNode.get( "reporter" );
            processReporter( issue, val );


            val = fieldsNode.get( "resolution" );
            processResolution( issue, val );


            val = fieldsNode.get( "status" );
            processStatus( issue, val );


            val = fieldsNode.get( "summary" );
            if ( val != null )
            {
                issue.setSummary( val.asText() );
            }


            val = fieldsNode.get( "title" );
            if ( val != null )
            {
                issue.setTitle( val.asText() );
            }


            val = fieldsNode.get( "updated" );
            processUpdated( issue, val );


            val = fieldsNode.get( "versions" );
            processVersions( issue, val );


            issueList.add( issue );
        }
    }

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        }
    }


    private String getPerson( JsonNode val )
    {
        JsonNode nameNode = val.get( "displayName" );
        if ( nameNode == null )
        {
            nameNode = val.get( "name" );
        }
        if ( nameNode != null )
        {
            return nameNode.asText();
        }
        else
        {
            return null;
        }

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        if ( val != null )
        {
            assert val.isArray();
            for ( int vx = 0; vx < val.size(); vx++ )
            {
                JsonNode fvNode = val.get( vx );
                issue.addFixVersion( fvNode.get( "name" ).asText() );
            }
        }
    }

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    private void processComments( Issue issue, JsonNode val )
    {
        if ( val != null )
        {
            JsonNode commentsArray = val.get( "comments" );
            for ( int cx = 0; cx < commentsArray.size(); cx++ )
            {
                JsonNode cnode = commentsArray.get( cx );
                issue.addComment( cnode.get( "body" ).asText() );
            }
        }
    }

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        if ( val != null )
        {
            assert val.isArray();
            for ( int cx = 0; cx < val.size(); cx++ )
            {
                JsonNode cnode = val.get( cx );
                issue.addComponent( cnode.get( "name" ).asText() );
            }
        }
    }

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