org.mapfish.print.processor

Class PdfConfigurationProcessor

java.lang.Object

org.mapfish.print.processor.AbstractProcessor<PdfConfigurationProcessor.In,java.lang.Void>

org.mapfish.print.processor.PdfConfigurationProcessor

All Implemented Interfaces:

ConfigurationObject, Processor<PdfConfigurationProcessor.In,java.lang.Void>

public final class PdfConfigurationProcessor
extends AbstractProcessor<PdfConfigurationProcessor.In,java.lang.Void>

This processor allows the dynamic configuration of the PDFConfig object by obtaining data from attributes. For example the title and author could be string attributes posted from the client, this processor would update the PDFConfig object with the attribute data allowing per report PDF metadata.

Note: The PDFConfig can also be configured in the config.yaml either at the config or template level.

See also: !updatePdfConfigUpdate attribute

[[examples=updatePdfMetadata]]

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PdfConfigurationProcessor.In The input parameters object.
static class	PdfConfigurationProcessor.Update The object that defines how to update the PDFConfig (see !updatePdfConfig processor).

Nested classes/interfaces inherited from class org.mapfish.print.processor.AbstractProcessor

AbstractProcessor.Context

Nested classes/interfaces inherited from interface org.mapfish.print.processor.Processor

Processor.ExecutionContext

Constructor Summary

Constructors

Constructor and Description
PdfConfigurationProcessor() Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
PdfConfigurationProcessor.In	createInputParameter() Returns a new/clean instance of a parameter object.
java.lang.Void	execute(PdfConfigurationProcessor.In in, Processor.ExecutionContext context) Perform the process on the input attributes.
protected void	extraValidation(java.util.List<java.lang.Throwable> validationErrors, Configuration configuration) Perform any extra validation a subclass may need to perform.
void	setUpdates(java.util.Map<java.lang.String,java.lang.Object> updates) The pdf metadata property -> attribute name map.

Methods inherited from class org.mapfish.print.processor.AbstractProcessor

checkCancelState, getInputMapperBiMap, getInputPrefix, getOutputMapperBiMap, getOutputPrefix, getOutputType, setInputMapper, setInputPrefix, setOutputMapper, setOutputPrefix, setPrefix, toString, validate

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PdfConfigurationProcessor

public PdfConfigurationProcessor()

Constructor.

Method Detail

setUpdates

public void setUpdates(java.util.Map<java.lang.String,java.lang.Object> updates)

The pdf metadata property -> attribute name map. The keys must be one of the values in PDFConfig and the values must be the name of the attribute to obtain the the data from. Example Configuration:

 processors:
   - !updatePdfConfig
     updates:
       title: "titleAttribute"
       subject: "subjectAttribute"
 

The type of the attribute must be of the correct type, for example title mus be a string, keywords must be an array of strings, compress must be a boolean.

If the value is within the attribute output object then you can use dot separators for each level. For example suppose there is a custom attribute: myconfig, if and it has a property title then the configuration would be:

 processors:
   - updatePdfConfig
     updates: {title: :myconfig.title"}
 

For more power a "format" can be defined. The format is a printf style format string which will be called with a single value that is identified by the value key/path. In this case the short hand key: value can't be used instead it is as follows:

   - updatePdfConfig
     updates:
       title: !updatePdfConfigUpdate
          valueKey: "myconfig.title"
          format: "Print Report %s"
 

Parameters:

updates - the attribute map

extraValidation

protected void extraValidation(java.util.List<java.lang.Throwable> validationErrors,
                   Configuration configuration)

Description copied from class: AbstractProcessor

Perform any extra validation a subclass may need to perform.

Specified by:

extraValidation in class AbstractProcessor<PdfConfigurationProcessor.In,java.lang.Void>

Parameters:

validationErrors - a list to add errors to so that all validation errors are reported as one.

configuration - the containing configuration

createInputParameter

@Nullable
public PdfConfigurationProcessor.In createInputParameter()

Description copied from interface: Processor

Returns a new/clean instance of a parameter object. This instance's will be inspected using reflection to find its public fields and the properties will be set from the Values object.

The way the properties will be looked up is to

1. take the bean property name
2. map it using the input mapper, (if the input mapper does not have a mapping for the property then the unmapped property name is used)
3. Look up the property value in the Values object using the mapped property name
4. set the value on the instance created by this method. If the value is null an exception will be thrown UNLESS the HasDefaultValue annotation is on the field for the property.

The populated instance will be passed to the execute method. It is imperative that a new instance is created each time because they will be used in a multi-threaded environment and thus the same processor instance may be ran in multiple threads with different instances of the parameter object.

It is important to realize that super classes will also be analyzed, so care must be had with inheritance.

execute

@Nullable
public java.lang.Void execute(PdfConfigurationProcessor.In in,
                              Processor.ExecutionContext context)
                       throws java.lang.Exception

Description copied from interface: Processor

Perform the process on the input attributes.

Parameters:

in - A Java object whose public fields are populated from the Values object (which is used for transferring properties between processors).

context - The execution context for a print task.

Returns:

A Java object whose public fields will be put into the Values object. The key in the Values object is the name of the field or if there is a mapping in the Processor.getOutputMapperBiMap() map, the mapped name. The key is determined in a similar way as for the input object.

Throws:

java.lang.Exception