Package convex.core

Class BlockResult

java.lang.Object

convex.core.data.AObject

convex.core.data.ACell

convex.core.data.ACountable<MapEntry<Keyword,ACell>>

convex.core.data.ADataStructure<MapEntry<Keyword,ACell>>

convex.core.data.AMap<Keyword,ACell>

convex.core.data.ARecord

convex.core.BlockResult

All Implemented Interfaces:

IAssociative<Keyword,ACell>, IValidated, IWriteable, Map<Keyword,ACell>

public class BlockResult
extends ARecord

Class representing the result of applying a Block to a State. Each transaction in the block has a corresponding result entry, which may either be a valid result or an error.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

Fields inherited from class convex.core.data.ARecord

DEFAULT_VALUE

Fields inherited from class convex.core.data.ADataStructure

count

Fields inherited from class convex.core.data.ACell

cachedRef, memorySize

Fields inherited from class convex.core.data.AObject

encoding

Method Summary

Modifier and Type	Method	Description
static BlockResult	create(State state, AVector<Result> results)	Create a BlockResult
static BlockResult	create(State state, Result[] results)	Create a BlockResult
static BlockResult	createInvalidBlock(State state, Block block, AString message)	Creates a BlockResult for an invalid Block (i.e.
int	encode(byte[] bs, int pos)	Writes this Cell's encoding to a byte array, including a tag byte which will be written first.
int	encodeRaw(byte[] bs, int pos)	Writes this Cell's encoding to a byte array, excluding the tag byte.
boolean	equals(BlockResult a)	Tests if this BlockResult is equal to another
boolean	equals(ACell a)	Checks for equality with another Cell.
int	estimatedEncodingSize()	Estimate the encoded data size for this Cell.
ACell	get(Keyword key)	Gets the record field content for a given key, or null if not found.
ACell	getErrorCode(long i)	Gets the error code for a given transaction
RecordFormat	getFormat()	Gets the RecordFormat instance that describes this Record's layout
<R extends ACell> Ref<R>	getRef(int i)	Gets a numbered child Ref from within this Cell.
int	getRefCount()	Gets the number of Refs contained within this Cell.
Result	getResult(long i)	Gets a specific Result
AVector<Result>	getResults()	Gets the Results of all transactions in the Block
State	getState()	Get the State resulting from this Block.
byte	getTag()	Gets the tag byte for this record type.
boolean	isError(long i)	Checks if a result at a specific position is an error
static BlockResult	read(Blob b, int pos)	Decodes a BlockResult from a Blob
BlockResult	updateRefs(IRefFunction func)	Updates all Refs in this object using the given function.
void	validate()	Validates the complete structure of this object.
void	validateCell()	Validates the local structure and invariants of this cell.

Methods inherited from class convex.core.data.ARecord

accumulateEntrySet, accumulateKeySet, accumulateValues, assoc, assocEntry, containsKey, containsValue, dissoc, dissoc, empty, entryAt, entrySet, forEach, get, getEntry, getEntryByHash, getKeyRefEntry, getKeys, getType, getValuesArray, isCanonical, isCVMValue, keySet, reduceEntries, reduceValues, toCanonical, toHashMap, values

Methods inherited from class convex.core.data.AMap

clear, conj, containsKey, containsKeyRef, containsValue, entryVector, filterValues, get, get, get, getElementRef, merge, print, put, putAll, remove, slice, slice

Methods inherited from class convex.core.data.ADataStructure

checkIndex, conjAll, count, isDataValue, isEmpty, size, toCVMString

Methods inherited from class convex.core.data.ACell

attachMemorySize, attachRef, cachedEncoding, cachedHash, calcMemorySize, createEncoding, createRef, equals, genericEquals, getCanonical, getChildRefs, getEncoding, getEncodingLength, getHash, getMemorySize, getMemorySize, getRef, hashCode, isEmbedded, toString

Methods inherited from class convex.core.data.AObject

attachEncoding, print, print

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, equals, getOrDefault, hashCode, isEmpty, merge, putIfAbsent, remove, replace, replace, replaceAll, size

Method Details

create

public static BlockResult create(State state,
 Result[] results)

Create a BlockResult

Parameters:

state - Resulting State

results - Results of transactions in Block

Returns:

BlockResult instance

create

public static BlockResult create(State state,
 AVector<Result> results)

Create a BlockResult

Parameters:

state - Resulting State

results - Results of transactions in Block

Returns:

BlockResult instance

getState

public State getState()

Get the State resulting from this Block.

Returns:

State after Block is executed

getResults

public AVector<Result> getResults()

Gets the Results of all transactions in the Block

Returns:

Vector of Results

isError

public boolean isError(long i)

Checks if a result at a specific position is an error

Parameters:

i - Index of result in block

Returns:

True if result at index i is an error, false otherwise.

getResult

public Result getResult(long i)

Gets a specific Result

Parameters:

i - Index of Result

Returns:

Result at specified index for the current Block, or null if not available

getErrorCode

public ACell getErrorCode(long i)

Gets the error code for a given transaction

Parameters:

i - Index of Result

Returns:

Error code, or null if the transaction succeeded.

get

public ACell get(Keyword key)

Description copied from class: ARecord

Gets the record field content for a given key, or null if not found.

Specified by:

get in class ARecord

Parameters:

key - Key to look up in this record

Returns:

Field value for the given key

getTag

public byte getTag()

Description copied from class: ARecord

Gets the tag byte for this record type. The Tag is the byte used to identify the record in the binary encoding.

Specified by:

getTag in class ARecord

Returns:

Record tag byte

updateRefs

public BlockResult updateRefs(IRefFunction func)

Description copied from class: ACell

Updates all Refs in this object using the given function. The function *must not* change the hash value of Refs, in order to ensure structural integrity of modified data structures. The implementation *should* re-attach any original encoding in order to prevent re-encoding or surplus hashing This is a building block for a very sneaky trick that enables use to do a lot of efficient operations on large trees of smart references. Must return the same object if no Refs are altered.

Overrides:

updateRefs in class ACell

Parameters:

func - Ref update function

Returns:

Cell with updated Refs

validateCell

public void validateCell()
                  throws InvalidDataException

Description copied from class: ACell

Validates the local structure and invariants of this cell. Called by validate() super implementation. Should validate directly contained data, but should not validate all other structure of this cell. In particular, should not traverse potentially missing child Refs.

Specified by:

validateCell in class ACell

Throws:

InvalidDataException - If the Cell is invalid

validate

public void validate()
              throws InvalidDataException

Description copied from interface: IValidated

Validates the complete structure of this object. It is necessary to ensure all child Refs are validated, so the general contract for validate is:

1. Call super.validate() - which will indirectly call validateCell()
2. Call validate() on any contained cells in this class

Specified by:

validate in interface IValidated

Overrides:

validate in class ACell

Throws:

InvalidDataException - If the data Value is invalid in any way

encode

public int encode(byte[] bs,
 int pos)

Description copied from class: ACell

Writes this Cell's encoding to a byte array, including a tag byte which will be written first. Cell must be canonical, or else an error may occur.

Specified by:

encode in interface IWriteable

Specified by:

encode in class ACell

Parameters:

bs - A byte array to which to write the encoding

pos - The offset into the byte array

Returns:

New position after writing

encodeRaw

public int encodeRaw(byte[] bs,
 int pos)

Description copied from class: ACell

Writes this Cell's encoding to a byte array, excluding the tag byte.

Specified by:

encodeRaw in class ACell

Parameters:

bs - A byte array to which to write the encoding

pos - The offset into the byte array

Returns:

New position after writing

estimatedEncodingSize

public int estimatedEncodingSize()

Description copied from interface: IWriteable

Estimate the encoded data size for this Cell. Used for quickly sizing buffers. Implementations should try to return a size that is highly likely to contain the entire object when encoded, including the tag byte. Should not traverse soft Refs, i.e. must be usable on arbitrary partial data structures

Specified by:

estimatedEncodingSize in interface IWriteable

Overrides:

estimatedEncodingSize in class ARecord

Returns:

The estimated size for the binary representation of this object.

read

public static BlockResult read(Blob b,
 int pos)
                        throws BadFormatException

Decodes a BlockResult from a Blob

Parameters:

b - Blob to read from

pos - start position in Blob

Returns:

BlockResult instance

Throws:

BadFormatException - If encoding format has errors

equals

public boolean equals(ACell a)

Description copied from class: ACell

Checks for equality with another Cell. In general, Cells are considered equal if they have the same canonical representation, i.e. an identical encoding with the same hash value. Subclasses SHOULD override this if they have a more efficient equals implementation. MUST NOT require reads from Store.

Specified by:

equals in class ACell

Parameters:

a - Cell to compare with. May be null.

Returns:

True if this cell is equal to the other object

equals

public boolean equals(BlockResult a)

Tests if this BlockResult is equal to another

Parameters:

a - BlockResult to compare with

Returns:

true if equal, false otherwise

getRefCount

public int getRefCount()

Description copied from class: ACell

Gets the number of Refs contained within this Cell. This number is final / immutable for any given instance and is defined by the Cell encoding rules. Contained Refs may be either external or embedded.

Overrides:

getRefCount in class ACell

Returns:

The number of Refs in this Cell

getRef

public <R extends ACell> Ref<R> getRef(int i)

Description copied from class: ACell

Gets a numbered child Ref from within this Cell. WARNING: May need to convert to a canonical instance

Overrides:

getRef in class ACell

Type Parameters:

R - Type of referenced Cell

Parameters:

i - Index of ref to get

Returns:

The Ref at the specified index

getFormat

public RecordFormat getFormat()

Description copied from class: ARecord

Gets the RecordFormat instance that describes this Record's layout

Specified by:

getFormat in class ARecord

Returns:

RecordFormat instance

createInvalidBlock

public static BlockResult createInvalidBlock(State state,
 Block block,
 AString message)

Creates a BlockResult for an invalid Block (i.e. no peer)

Parameters:

state - State at time of creation

block - Invalid block

message - Message to report to clients

Returns:

BlockResult instance