Package org.hippoecm.frontend.util

Class InterpolationUtils

java.lang.Object

org.hippoecm.frontend.util.InterpolationUtils

public class InterpolationUtils
extends Object

Variable interpolation utility, replacing a text with variable references by resolved values.

This utility class provides features to replace texts containing variables by looking up values from the platform ContainerConfiguration.

Field Summary

Fields

Modifier and Type	Field	Description
static final char	DEFAULT_ESCAPE	Default escape character to override the default escape character of StringSubstitutor, '$'.

Method Summary

Modifier and Type	Method	Description
static String	interpolate(String text)	Replaces the given text by looking up values from the platform configuration.
static String	interpolate(String text, String variablePrefix, String variableSuffix, Character escapeChar)	Replaces the given text by looking up values from the platform configuration.
static String	interpolate(org.apache.commons.text.lookup.StringLookup strLookup, String text, String variablePrefix, String variableSuffix, Character escapeChar)	Replaces the given text by looking up values from the given StringLookup.
static String	interpolate(ContainerConfiguration containerConfiguration, String text, String variablePrefix, String variableSuffix, Character escapeChar)	Replaces the given text by looking up values from the given container configuration.

Methods inherited from class java.lang.Object

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

Field Details

DEFAULT_ESCAPE

public static final char DEFAULT_ESCAPE

Default escape character to override the default escape character of StringSubstitutor, '$'. '\\' is more user friendly than '$' in most use cases.

See Also:

• Constant Field Values

Method Details

interpolate

public static String interpolate(String text)

Replaces the given text by looking up values from the platform configuration. It uses the variable prefix "${". it uses the variable suffix "}". The escape sequence // can be used before a variable reference to ignore the expression.

Parameters:

text - text to replace

Returns:

replaced string by the values found in the given resource bundle

interpolate

public static String interpolate(String text,
 String variablePrefix,
 String variableSuffix,
 Character escapeChar)

Replaces the given text by looking up values from the platform configuration.

Parameters:

text - text to replace

variablePrefix - variable reference prefix. "${" by default.

variableSuffix - variable reference suffix. "}" by default.

escapeChar - escape character which can be put just before a variable reference to ignore the expression.

Returns:

replaced string by the values found in the given resource bundle

interpolate

public static String interpolate(ContainerConfiguration containerConfiguration,
 String text,
 String variablePrefix,
 String variableSuffix,
 Character escapeChar)

Replaces the given text by looking up values from the given container configuration.

Parameters:

containerConfiguration - platform configuration

text - text to replace

variablePrefix - variable reference prefix. "${" by default.

variableSuffix - variable reference suffix. "}" by default.

escapeChar - escape character which can be put just before a variable reference to ignore the expression.

Returns:

replaced string by the values found in the given resource bundle

interpolate

public static String interpolate(org.apache.commons.text.lookup.StringLookup strLookup,
 String text,
 String variablePrefix,
 String variableSuffix,
 Character escapeChar)

Replaces the given text by looking up values from the given StringLookup.

Parameters:

strLookup - string lookup

text - text to replace

variablePrefix - variable reference prefix. "${" by default.

variableSuffix - variable reference suffix. "}" by default.

escapeChar - escape character which can be put just before a variable reference to ignore the expression.

Returns:

replaced string by the values found in the given resource bundle