Patterns (Common Trees 1.4.2-3.9.0 API)

java.lang.Object
- org.gcube.data.trees.patterns.Patterns

```
public class Patterns
extends Object
```
Defines a simple EDSL for Patterns and other related facilities.

Author:

Fabio Simeoni

Field Summary

Fields
Modifier and Type Field and Description

static QName any
A wildcard for labels.

static AnyValue anyval
The null constraint.

static boolean C
A marker for condition edges.

Fields
Modifier and Type	Field and Description
`static QName`	`any` A wildcard for labels.
`static AnyValue`	`anyval` The null constraint.
`static boolean`	`C` A marker for condition edges.

Constructor Summary

Constructors
Constructor and Description

Patterns()

Constructors
Constructor and Description
`Patterns()`

Method Summary

Methods
Modifier and Type	Method and Description
`static After`	`after(Calendar c)` Returns a `After` constraint for a given calendar.
`static AfterDate`	`afterDate(Date d)` Returns an `AfterDate` constraint for a given date.
`static <T> All<T>`	`all(Constraint<T> constraint1, Constraint<T> constraint2)` Returns an `All` constraint that combines two or more `Constraint`s.
`static AnyPattern`	`any()` The `AnyPattern`.
`static AtLeastPattern`	`atleast(QName label, Pattern pattern)` Returns an `AtLeastPattern` for a given label and a given `Pattern`.
`static AtLeastPattern`	`atleast(String label, Pattern pattern)` Returns an `AtLeastPattern` for a given label and a given `Pattern`.
`static Before`	`before(Calendar c)` Returns a `Before` constraint for a given calendar.
`static BeforeDate`	`before(Date d)` Returns a `BeforeDate` constraint for a given date.
`static BoolPattern`	`bool()` Returns an unconstrained `BoolPattern` predicate.
`static BoolPattern`	`bool(Constraint<? super Boolean> c)` Returns a `BoolPattern` with a given constraint.
`static CalendarPattern`	`calendar()` Returns an unconstrained `CalendarPattern`.
`static CalendarPattern`	`calendar(Constraint<? super Calendar> c)` Returns a `CalendarPattern`with a given constraint.
`static EdgePattern`	`clone(EdgePattern pattern)` Clones an `EdgePattern`.
`static Pattern`	`clone(Pattern pattern)` Clones a `Pattern`.
`static EdgePattern`	`cond(EdgePattern p)` Marks an `EdgePattern` as a condition.
`static CutTreePattern`	`cut(TreePattern pattern)` Returns a `CutTreePattern` with the `EdgePattern`s of a given `TreePattern` but removes all the edges of a matching node under pruning
`static DatePattern`	`date()` Returns an unconstrained `DatePattern`.
`static DatePattern`	`date(Constraint<? super Date> c)` Returns a `DatePattern` with a given constraint.
`static <T> Either<T>`	`either(Constraint<T> constraint1, Constraint<T> constraint2)` Returns an `Either` constraint that combines two or more `Constraint`s.
`static After`	`future()` Returns an `After` constraint for the current date.
`static AfterDate`	`futureDate()` Returns an `AfterDate` constraint for the current date.
`static Marshaller`	`getMarshaller()` Returns a `Marshaller` for `Pattern`s.
`static Unmarshaller`	`getUnMarshaller()` Returns an `Unmarshaller` for `Pattern`s.
`static TreePattern`	`hasLabelPath(QName... labels)` Returns a `TreePattern` that matches `InnerNode`s with a path of one or more edge labels.
`static TreePattern`	`hasLabelPath(String... labels)` Returns a `TreePattern` that matches `InnerNode`s with a path of one or more edge labels.
`static Pattern`	`hasPath(String... ids)` Returns a `Pattern` that matches `InnerNode`s with a path of one or more node identifiers.
`static <T extends AbstractPattern> T`	`id(LeafPattern<?,?> idp, T p)` Adds a `LeafPattern` over the identifier of nodes matched by an `AbstractPattern`.
`static <T extends AbstractPattern> T`	`id(String identifier, T pattern)` Adds a `LeafPattern` for text equality over the identifier of nodes matched by a `AbstractPattern`.
`static <T> Same<T>`	`is(T v)` Returns a `Same` constraint for a given value.
`static Less`	`less(double than)` Returns a `Less` constraint for a given value.
`static ManyPattern`	`many(QName label, Pattern pattern)` Returns a `ManyPattern` for a given label and a given `Pattern`.
`static ManyPattern`	`many(String label, Pattern pattern)` Returns a `ManyPattern` for a given label and a given `Pattern`.
`static Match`	`matches(String regex)` Returns a `Match` constraint for a given regular expression.
`static More`	`more(double than)` Returns a `More` constraint for a given value.
`static <T> Not<T>`	`not(Constraint<T> constraint)` Returns an `Not` constraint for a given constraint.
`static NumPattern`	`num()` Returns an unconstrained `NumPattern`.
`static NumPattern`	`num(Constraint<? super Double> c)` Returns a `NumPattern` with a given constraint.
`static OnePattern`	`one(QName label, Pattern pattern)` Returns a `OnePattern` for a given label and a given `Pattern`.
`static OnePattern`	`one(String label, Pattern pattern)` Returns a `OnePattern` for a given label and a given `Pattern`.
`static OnlyPattern`	`only(QName label, Pattern pattern)` Returns an `OnlyPattern` for a given label and a given `Pattern`.
`static OnlyPattern`	`only(String label, Pattern pattern)` Returns an `OnlyPattern` for a given label and a given `Pattern`.
`static OptPattern`	`opt(QName label, Pattern pattern)` Returns an `OptPattern` for a given label and a given `Pattern`.
`static OptPattern`	`opt(String label, Pattern pattern)` Returns an `OptPattern` for a given label and a given `Pattern`.
`static Before`	`past()` Returns an `Before` constraint for the current date.
`static BeforeDate`	`pastDate()` Returns a `BeforeDate` constraint for the current date.
`static ManyPattern`	`tail()` Returns a `ManyPattern` that matches all the children of a node not previously matched by the `EdgePattern`s of a `TreePattern`.
`static TextPattern`	`text()` Returns an unconstrained `TextPattern`.
`static TextPattern`	`text(Constraint<? super String> constraint)` Returns a `TextPattern` with a given constraint.
`static TreePattern`	`tree(EdgePattern... patterns)` Returns a `TreePattern` with one or more `EdgePattern`s.
`static URIPattern`	`uri()` Returns an unconstrained `URIPattern`.
`static URIPattern`	`uri(Constraint<? super URI> c)` Returns a `URIPattern` with a given constraint.

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

- Field Detail
  - any
```
public static final QName any
```
    A wildcard for labels.
  - C
```
public static final boolean C
```
    A marker for condition edges.
    
    See Also:
    Constant Field Values
  - anyval
```
public static final AnyValue anyval
```
    The null constraint.
- Constructor Detail
  - Patterns
```
public Patterns()
```
- Method Detail
  - getMarshaller
```
public static Marshaller getMarshaller()
                                throws JAXBException
```
    Returns a Marshaller for Patterns.
    
    Returns:
    the Marshaller
    
    Throws:
    
    JAXBException - if the Marshaller could not be returned.
  - getUnMarshaller
```
public static Unmarshaller getUnMarshaller()
                                    throws JAXBException
```
    Returns an Unmarshaller for Patterns.
    
    Returns:
    the Unmarshaller
    
    Throws:
    
    JAXBException - if the Unmarshaller could not be returned.
  - any
```
public static final AnyPattern any()
```
    The AnyPattern.
  - clone
```
public static final Pattern clone(Pattern pattern)
                           throws Exception
```
    Clones a Pattern.
    
    Parameters:
    pattern - the pattern to clone
    
    Returns:
    the pattern's clone
    
    Throws:
    
    Exception - if the pattern could not be cloned
  - clone
```
public static final EdgePattern clone(EdgePattern pattern)
                               throws Exception
```
    Clones an EdgePattern.
    
    Parameters:
    pattern - the pattern to clone
    
    Returns:
    the pattern's clone
    
    Throws:
    
    Exception - if the pattern could not be cloned
  - tree
```
public static final TreePattern tree(EdgePattern... patterns)
```
    Returns a TreePattern with one or more EdgePatterns.
    
    Parameters:
    patterns - the EdgePatterns
    
    Returns:
    the TreePattern
  - hasPath
```
public static final Pattern hasPath(String... ids)
                             throws IllegalArgumentException
```
    Returns a Pattern that matches InnerNodes with a path of one or more node identifiers.
    
    Parameters:
    ids - the identifiers
    
    Returns:
    the pattern
    
    Throws:
    
    IllegalArgumentException - if it is invoked with null or no input
  - hasLabelPath
```
public static final TreePattern hasLabelPath(String... labels)
                                      throws IllegalArgumentException
```
    Returns a TreePattern that matches InnerNodes with a path of one or more edge labels.
    
    Parameters:
    labels - the local names of the labels.
    
    Returns:
    the pattern.
    
    Throws:
    
    IllegalArgumentException - if it is invoked with null or no input.
  - hasLabelPath
```
public static final TreePattern hasLabelPath(QName... labels)
                                      throws IllegalArgumentException
```
    Returns a TreePattern that matches InnerNodes with a path of one or more edge labels.
    
    Parameters:
    labels - the local names of the labels.
    
    Returns:
    the pattern.
    
    Throws:
    
    IllegalArgumentException - if it is invoked with null or no input.
  - cond
```
public static EdgePattern cond(EdgePattern p)
```
    Marks an EdgePattern as a condition.
    
    Parameters:
    p - the pattern
    
    Returns:
    the pattern
  - id
```
public static final <T extends AbstractPattern> T id(LeafPattern<?,?> idp,
                               T p)
```
    Adds a LeafPattern over the identifier of nodes matched by an AbstractPattern.
    
    Parameters:
    idp - the LeafPattern
    p - the AbstractPattern
    
    Returns:
    the AbstractPattern obtained from the original AbstractPattern by adding the LeafPattern
  - id
```
public static final <T extends AbstractPattern> T id(String identifier,
                               T pattern)
```
    Adds a LeafPattern for text equality over the identifier of nodes matched by a AbstractPattern.
    
    Parameters:
    identifier - the string to compare with node identifiers
    pattern - the AbstractPattern
    
    Returns:
    the AbstractPattern obtained from the original TreePattern by adding the AbstractPattern
  - one
```
public static final OnePattern one(QName label,
             Pattern pattern)
```
    Returns a OnePattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the pattern
    
    Returns:
    the OnePattern
  - one
```
public static final OnePattern one(String label,
             Pattern pattern)
```
    Returns a OnePattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the pattern
    
    Returns:
    the OnePattern
  - opt
```
public static final OptPattern opt(QName label,
             Pattern pattern)
```
    Returns an OptPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the pattern
    
    Returns:
    the OptPattern
  - opt
```
public static final OptPattern opt(String label,
             Pattern pattern)
```
    Returns an OptPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the pattern
    
    Returns:
    the OptPattern
  - atleast
```
public static final AtLeastPattern atleast(QName label,
                     Pattern pattern)
```
    Returns an AtLeastPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the Pattern
    
    Returns:
    the AtLeastPattern
  - atleast
```
public static final AtLeastPattern atleast(String label,
                     Pattern pattern)
```
    Returns an AtLeastPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the Pattern
    
    Returns:
    the AtLeastPattern
  - many
```
public static final ManyPattern many(QName label,
               Pattern pattern)
```
    Returns a ManyPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the Pattern.
    
    Returns:
    the ManyPattern.
  - many
```
public static final ManyPattern many(String label,
               Pattern pattern)
```
    Returns a ManyPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the Pattern.
    
    Returns:
    the ManyPattern.
  - only
```
public static final OnlyPattern only(QName label,
               Pattern pattern)
```
    Returns an OnlyPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the Pattern
    
    Returns:
    the OnlyPattern
  - only
```
public static final OnlyPattern only(String label,
               Pattern pattern)
```
    Returns an OnlyPattern for a given label and a given Pattern.
    
    Parameters:
    label - the label
    pattern - the Pattern
    
    Returns:
    the OnlyPattern
  - tail
```
public static ManyPattern tail()
```
    Returns a ManyPattern that matches all the children of a node not previously matched by the EdgePatterns of a TreePattern.
    
    Returns:
    the pattern
  - cut
```
public static CutTreePattern cut(TreePattern pattern)
```
    Returns a CutTreePattern with the EdgePatterns of a given TreePattern but removes all the edges of a matching node under pruning
    
    Parameters:
    pattern - the Pattern
    
    Returns:
    the CutTreePattern
  - text
```
public static TextPattern text(Constraint<? super String> constraint)
```
    Returns a TextPattern with a given constraint.
    
    Parameters:
    constraint - the constraint
    
    Returns:
    the TextPattern
  - text
```
public static TextPattern text()
```
    Returns an unconstrained TextPattern.
    
    Returns:
    the TextPattern
  - num
```
public static NumPattern num(Constraint<? super Double> c)
```
    Returns a NumPattern with a given constraint.
    
    Parameters:
    c - the constraint
    
    Returns:
    the NumPattern
  - num
```
public static NumPattern num()
```
    Returns an unconstrained NumPattern.
    
    Returns:
    the NumPattern
  - bool
```
public static BoolPattern bool(Constraint<? super Boolean> c)
```
    Returns a BoolPattern with a given constraint.
    
    Parameters:
    c - the constraint
    
    Returns:
    the BoolPattern
  - bool
```
public static BoolPattern bool()
```
    Returns an unconstrained BoolPattern predicate.
    
    Returns:
    the BoolPattern
  - date
```
public static DatePattern date(Constraint<? super Date> c)
```
    Returns a DatePattern with a given constraint.
    
    Parameters:
    c - the constraint
    
    Returns:
    the DatePattern
  - date
```
public static DatePattern date()
```
    Returns an unconstrained DatePattern.
    
    Returns:
    the DatePattern
  - uri
```
public static URIPattern uri(Constraint<? super URI> c)
```
    Returns a URIPattern with a given constraint.
    
    Parameters:
    c - the constraint
    
    Returns:
    the URIPattern
  - uri
```
public static URIPattern uri()
```
    Returns an unconstrained URIPattern.
    
    Returns:
    the URIPattern
  - calendar
```
public static CalendarPattern calendar(Constraint<? super Calendar> c)
```
    Returns a CalendarPatternwith a given constraint.
    
    Parameters:
    c - the constraint
    
    Returns:
    the CalendarPattern
  - calendar
```
public static CalendarPattern calendar()
```
    Returns an unconstrained CalendarPattern.
    
    Returns:
    the CalendarPattern
  - is
```
public static <T> Same<T> is(T v)
```
    Returns a Same constraint for a given value.
    
    Parameters:
    v - the value
    
    Returns:
    the constraint
  - matches
```
public static Match matches(String regex)
```
    Returns a Match constraint for a given regular expression.
    
    Parameters:
    regex - the expression
    
    Returns:
    the constraint
  - all
```
public static <T> All<T> all(Constraint<T> constraint1,
             Constraint<T> constraint2)
```
    Returns an All constraint that combines two or more Constraints.
    
    Type Parameters:
    T - the type of constrained values
    Parameters:
    constraint1 - the first constraint
    constraint2 - the second constraint
    
    Returns:
    the All constraint
  - either
```
public static <T> Either<T> either(Constraint<T> constraint1,
                   Constraint<T> constraint2)
```
    Returns an Either constraint that combines two or more Constraints.
    
    Type Parameters:
    T - the type of constrained values
    Parameters:
    constraint1 - the first constraint
    constraint2 - the second constraint
    
    Returns:
    the Either constraint
  - not
```
public static <T> Not<T> not(Constraint<T> constraint)
```
    Returns an Not constraint for a given constraint.
    
    Type Parameters:
    T - the type of constrained values
    Parameters:
    constraint - the constraint
    
    Returns:
    the Not constraint
  - more
```
public static More more(double than)
```
    Returns a More constraint for a given value.
    
    Parameters:
    than - the value
    
    Returns:
    the constraint
  - less
```
public static Less less(double than)
```
    Returns a Less constraint for a given value.
    
    Parameters:
    than - the value
    
    Returns:
    the constraint
  - before
```
public static BeforeDate before(Date d)
```
    Returns a BeforeDate constraint for a given date.
    
    Parameters:
    d - the date
    
    Returns:
    the constraint
  - afterDate
```
public static AfterDate afterDate(Date d)
```
    Returns an AfterDate constraint for a given date.
    
    Parameters:
    d - the date
    
    Returns:
    the constraint
  - futureDate
```
public static AfterDate futureDate()
```
    Returns an AfterDate constraint for the current date.
    
    Returns:
    the constraint
  - pastDate
```
public static BeforeDate pastDate()
```
    Returns a BeforeDate constraint for the current date.
    
    Returns:
    the constraint.
  - before
```
public static Before before(Calendar c)
```
    Returns a Before constraint for a given calendar.
    
    Parameters:
    c - the calendar
    
    Returns:
    the constraint
  - after
```
public static After after(Calendar c)
```
    Returns a After constraint for a given calendar.
    
    Parameters:
    c - the calendar
    
    Returns:
    the constraint
  - future
```
public static After future()
```
    Returns an After constraint for the current date.
    
    Returns:
    the constraint
  - past
```
public static Before past()
```
    Returns an Before constraint for the current date.
    
    Returns:
    the constraint

Class Patterns

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

any

C

anyval

Constructor Detail

Patterns

Method Detail

getMarshaller

getUnMarshaller

any

clone

clone

tree

hasPath

hasLabelPath

hasLabelPath

cond

id

id

one

one

opt

opt

atleast

atleast

many

many

only

only

tail

cut

text

text

num

num

bool

bool

date

date

uri

uri

calendar

calendar

is

matches

all

either

not

more

less

before

afterDate

futureDate

pastDate

before

after

future

past