org.transitime.reports

Class ChartJsonBuilder

java.lang.Object

org.transitime.reports.ChartJsonBuilder

public class ChartJsonBuilder
extends java.lang.Object

For creating the JSON data string used to power a Google Chart via AJAX.

One constructs a ChartJsonBuilder and then adds the columns using addNumberColumn(), addTooltipColumn() or addIntervalColumn().

For each row one first calls newRow() to get a RowBuilder. Then one calls RowBuilder.addRowElement() to add each element to the row. Then one calls

Author:

SkiBu Smith

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ChartJsonBuilder.RowBuilder For building a row, which consists of multiple data elements.

Constructor Summary

Constructors

Constructor and Description
ChartJsonBuilder()

Method Summary

Modifier and Type	Method and Description
void	addIntervalColumn() Add a interval column
void	addNumberColumn() Add a numeric column without a label
void	addNumberColumn(java.lang.String label) Add a numeric column with a label
void	addStringColumn() Add a string/varchar column without a label
void	addStringColumn(java.lang.String label) Add a string/varchar column with a label
void	addTooltipColumn() Add a tooltip column
java.lang.String	getJson() Once done building a JSON object then this method is used to return it as a string.
ChartJsonBuilder.RowBuilder	newRow() For adding a new row of data.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ChartJsonBuilder

public ChartJsonBuilder()

Method Detail

addNumberColumn

public void addNumberColumn()

Add a numeric column without a label

addNumberColumn

public void addNumberColumn(java.lang.String label)

Add a numeric column with a label

Parameters:

label -

addStringColumn

public void addStringColumn()

Add a string/varchar column without a label

addStringColumn

public void addStringColumn(java.lang.String label)

Add a string/varchar column with a label

Parameters:

label -

addTooltipColumn

public void addTooltipColumn()

Add a tooltip column

addIntervalColumn

public void addIntervalColumn()

Add a interval column

newRow

public ChartJsonBuilder.RowBuilder newRow()

For adding a new row of data. The returned RowBuilder needs to be populated by calling RowBuilder.addRowElement().

Returns:

The RowBuilder for the row being added.

getJson

public java.lang.String getJson()

Once done building a JSON object then this method is used to return it as a string.

Returns:

The complete JSON object