LabelExpression (Liquibase Parent 4.27.0 API)

java.lang.Object
- liquibase.LabelExpression

```
public class LabelExpression
extends Object
```
Wrapper for list of labels.
Labels are tags that you can add to changesets to control which changeset will be executed in any migration run. Labels control whether a changeset is executed depending on runtime settings. Any string can be used for the label name, and it is case-insensitive.

See Also:

labels in documentation

Constructor Summary

Constructors
Constructor Description

LabelExpression()

LabelExpression(String labels)

LabelExpression(String... labels)

LabelExpression(Collection<String> labels)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`add(String label)`
`Set<String>`	`getLabels()`
`String`	`getOriginalString()`
`boolean`	`isEmpty()`
`boolean`	`matches(Labels runtimeLabels)`	Returns true if the passed runtime labels match this label expression
`static boolean`	`matchesAll(Collection<Labels> changesetLabels, LabelExpression labelExpression)`	Return true if all the LabelExpression objects match the runtime
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

LabelExpression
```
public LabelExpression()
```

LabelExpression

public LabelExpression(String... labels)

LabelExpression

public LabelExpression(String labels)

LabelExpression

public LabelExpression(Collection<String> labels)

Method Detail

add
```
public boolean add(String label)
```

getLabels
```
public Set<String> getLabels()
```

toString
```
public String toString()
```
Overrides:

toString in class Object

matches
```
public boolean matches(Labels runtimeLabels)
```
Returns true if the passed runtime labels match this label expression

matchesAll
```
public static boolean matchesAll(Collection<Labels> changesetLabels,
                                 LabelExpression labelExpression)
```
Return true if all the LabelExpression objects match the runtime

Parameters:

changesetLabels - Expressions to match against

labelExpression - Runtime labels

Returns:

boolean True if match

isEmpty
```
public boolean isEmpty()
```

getOriginalString
```
public String getOriginalString()
```