T - the type of the input argument to the filterE - the type of the extracted attribute to use for comparisonpublic class LikeFilter<T,E> extends ComparisonFilter<T,E,String> implements IndexAwareFilter<Object,T>
During pattern matching, regular characters must exactly match the characters in an evaluated string. Wildcard character '_' (underscore) can be matched with any single character, and wildcard character '%' can be matched with any string fragment of zero or more characters.
ExternalizableHelper.DecoratedMultiBufferReadBuffer, ExternalizableHelper.DefaultObjectStreamFactory, ExternalizableHelper.FormatAwareCompressor, ExternalizableHelper.IntDecoratedObject, ExternalizableHelper.Shielded, ExternalizableHelper.ShieldedDataOutputStream, ExternalizableHelper.ShieldedInputStream, ExternalizableHelper.ShieldedObjectOutputStream, ExternalizableHelper.ShieldedOutputStream, ExternalizableHelper.SimpleXmlBeanClassCache, ExternalizableHelper.Stats, ExternalizableHelper.XmlBeanClassCacheBase.LoggingWriter, Base.StackFramem_valueEVAL_COST, m_extractorCONVERTER_FROM_BINARY, CONVERTER_STRIP_INTDECO, CONVERTER_TO_BINARY, DECO_APP_1, DECO_APP_2, DECO_APP_3, DECO_CUSTOM, DECO_EXPIRY, DECO_ID_MAX, DECO_ID_MIN, DECO_JCACHE, DECO_JCACHE_SYNTHETIC, DECO_MEMCACHED, DECO_PUSHREP, DECO_QUEUE_METADATA, DECO_RSVD_1, DECO_RSVD_2, DECO_STORE, DECO_TX, DECO_VALUE, DECO_WLS, EMPTY_BINARY_ARRAY, FMT_B_ARRAY, FMT_BIN_DECO, FMT_BIN_EXT_DECO, FMT_BINARY, FMT_BOOLEAN, FMT_BYTE, FMT_DECIMAL, FMT_DOUBLE, FMT_EXT, FMT_FLOAT, FMT_IDO, FMT_INT, FMT_INTEGER, FMT_LONG, FMT_NONE, FMT_NULL, FMT_OBJ_EXT, FMT_OBJ_SER, FMT_OPT, FMT_OPT_DOUBLE, FMT_OPT_INT, FMT_OPT_LONG, FMT_SHORT, FMT_STRING, FMT_UNKNOWN, FMT_XML_BEAN, FMT_XML_SER, FORCE_RESOLVING_STREAMS, MAX_DECO_HEADER_BYTES, PROPERTY_CONFIG, s_streamfactory, TRINT_DOMAIN_SPAN, TRINT_MAX_VALUE, TRINT_MAX_VARIANCE, USE_POF_STREAMS, USE_XMLBEAN_CLASS_CACHE, XMLBEAN_CLASS_CACHE| Constructor and Description |
|---|
LikeFilter()
Default constructor (necessary for the ExternalizableLite interface).
|
LikeFilter(String sMethod,
String sPattern)
Construct a LikeFilter for pattern match.
|
LikeFilter(String sMethod,
String sPattern,
boolean fIgnoreCase)
Construct a LikeFilter for pattern match.
|
LikeFilter(String sMethod,
String sPattern,
char chEscape,
boolean fIgnoreCase)
Construct a LikeFilter for pattern match.
|
LikeFilter(ValueExtractor<? super T,? extends E> extractor,
String sPattern)
Construct a LikeFilter for pattern match.
|
LikeFilter(ValueExtractor<? super T,? extends E> extractor,
String sPattern,
char chEscape,
boolean fIgnoreCase)
Construct a LikeFilter for pattern match.
|
| Modifier and Type | Method and Description |
|---|---|
Filter |
applyIndex(Map mapIndexes,
Set setKeys)
Filter remaining keys using a Map of available indexes.
|
protected void |
buildPlan()
Build a plan for processing the LIKE functionality.
|
int |
calculateEffectiveness(Map mapIndexes,
Set setKeys)
Given a Map of available indexes, determine if this IndexAwareFilter
can use any of the indexes to assist in its processing, and if so,
determine how effective the use of that index would be.
|
protected boolean |
evaluateExtracted(E extracted)
Evaluate the specified extracted value.
|
char |
getEscapeChar()
Obtain the escape character that is used for escaping '%' and '_' in
the pattern or zero if there is no escape.
|
String |
getPattern()
Obtain the filter's pattern string.
|
boolean |
isIgnoreCase()
Check whether or not the filter is case incensitive.
|
protected boolean |
isMatch(String sValue)
Check the passed String value to see if it matches the pattern that
this filter was constructed with.
|
void |
readExternal(DataInput in)
Restore the contents of this object by loading the object's state from
the passed DataInput object.
|
void |
readExternal(PofReader in)
Restore the contents of a user type instance by reading its state using
the specified PofReader object.
|
void |
showPlan()
Display the execution plan that the LikeFilter has selected.
|
void |
writeExternal(DataOutput out)
Save the contents of this object by storing the object's state into
the passed DataOutput object.
|
void |
writeExternal(PofWriter out)
Save the contents of a POF user type instance by writing its state using
the specified PofWriter object.
|
calculateMatchEffectiveness, calculateRangeEffectiveness, equals, getValue, hashCode, toString, toStringValuecalculateIteratorEffectiveness, ensureSafeSet, evaluate, evaluateEntry, extract, getValueExtractorexplain, explain, explain, trace, trace, trace, trace, traceasBinary, calculatePackedLength, calculatePackedLength, checkObjectInputFilter, convertUTF, decodeExpiry, decorate, decorate, decorate, decorate, decorate, decorateBinary, encodeExpiry, ensureSerializer, extractIntDecoration, fromBinary, fromBinary, fromBinary, fromBinary, fromBinary, fromBinary, fromByteArray, fromByteArray, getClass, getDecoration, getDecoration, getDecorations, getDeltaCompressor, getInputStream, getNewObjectInput, getObjectInput, getObjectOutput, getObjectStreamFactory, getOutputStream, getShieldedOutputStream, getStreamFormat, getUndecorated, getUndecorated, isDecorated, isDecorated, isIntDecorated, isIntDecorated, isResolving, isSerializable, isSerializerCompatible, isVersionCompatible, isVersionCompatible, loadClass, loadResource, main, makeTrint, readBigDecimal, readBigInteger, readBooleanArray, readByteArray, readCollection, readDate, readDoubleArray, readExternalizableLite, readExternalizableLite, readFloatArray, readInt, readInt, readIntArray2d, readLong, readLong, readMap, readMap, readObject, readObject, readSafeUTF, readSafeUTF, readSerializable, readSerializable, readStringArray, readTime, readTimestamp, readTrint, readUnsignedTrint, readUTF, readXmlBean, readXmlSerializable, readXmlSerializable, realize, removeIntDecoration, removeIntDecoration, replace, reportIncompatibleSerializers, setObjectStreamFactory, toBinary, toBinary, toByteArray, toByteArray, toByteArray, toLiteBinary, toLong, undecorate, undecorate, validateBufferSize, writeBigDecimal, writeBigInteger, writeBooleanArray, writeByteArray, writeCollection, writeDate, writeDoubleArray, writeExternalizableLite, writeFloatArray, writeInt, writeInt, writeIntArray2d, writeLong, writeLong, writeMap, writeObject, writeSafeUTF, writeSafeUTF, writeSerializable, writeStringArray, writeTime, writeTimestamp, writeTrint, writeTrint, writeUTF, writeXmlBean, writeXmlSerializablecountBits, countBits, countBits, indexOfLSB, indexOfLSB, indexOfLSB, indexOfMSB, indexOfMSB, indexOfMSB, rotateLeft, rotateLeft, rotateLeft, rotateRight, rotateRight, rotateRight, toBitString, toBitString, toBitString, toBytes, toBytes, toBytes, toBytes, toInt, toInt, toLongazzert, azzert, azzert, azzertFailed, breakLines, breakLines, capitalize, checkNotEmpty, checkNotNull, checkRange, computeSafeWaitTime, decimalValue, dup, dup, ensureBigDecimal, ensureClassLoader, ensureRuntimeException, ensureRuntimeException, equals, equalsDeep, err, err, err, err, err, escape, formatDateTime, getCallerStackFrame, getCommonMonitor, getCommonMonitor, getCommonMonitor, getContextClassLoader, getContextClassLoader, getDeepMessage, getErr, getLastSafeTimeMillis, getLog, getMaxDecDigits, getMaxHexDigits, getOriginalException, getOut, getProcessRandom, getRandom, getRandomBinary, getRandomBinary, getRandomString, getSafeTimeMillis, getStackFrame, getStackFrames, getStackTrace, getStackTrace, getThreadFactory, getTimeZone, getUpTimeMillis, hashCode, hexValue, indentString, indentString, isDecimal, isHex, isLogEcho, isOctal, log, log, log, log, log, makeInteger, makeLong, makeThread, mod, mod, octalValue, out, out, out, out, out, pad, parseBandwidth, parseBandwidth, parseDelimitedString, parseHex, parseHex, parseMemorySize, parseMemorySize, parsePercentage, parseTime, parseTime, parseTimeNanos, parseTimeNanos, printStackTrace, randomize, randomize, randomize, randomize, read, read, read, read, read, read, read, replace, setErr, setLog, setLogEcho, setOut, sleep, toBandwidthString, toBandwidthString, toCharEscape, toCrc, toCrc, toCrc, toCrc, toCrc, toDecString, toDelimitedString, toDelimitedString, toDelimitedString, toDelimitedString, toHex, toHex, toHexDump, toHexEscape, toHexEscape, toHexEscape, toHexEscape, toHexString, toMemorySizeString, toMemorySizeString, toQuotedCharEscape, toQuotedStringEscape, toSqlString, toString, toString, toStringEscape, toUnicodeEscape, trace, trace, trace, trace, trace, trace, trace, trace, trace, truncateString, truncateString, waitclone, finalize, getClass, notify, notifyAll, wait, wait, waitevaluateEntryand, asLimitFilter, associatedWith, evaluate, forKeys, forPartitions, or, xorpublic LikeFilter()
public LikeFilter(String sMethod, String sPattern)
sMethod - the name of the method to invoke via reflectionsPattern - the string pattern to compare the result withpublic LikeFilter(String sMethod, String sPattern, boolean fIgnoreCase)
sMethod - the name of the method to invoke via reflectionsPattern - the string pattern to compare the result withfIgnoreCase - true to be case-insensitivepublic LikeFilter(String sMethod, String sPattern, char chEscape, boolean fIgnoreCase)
sMethod - the name of the method to invoke via reflectionsPattern - the string pattern to compare the result withchEscape - the escape character for escaping '%' and '_'fIgnoreCase - true to be case-insensitivepublic LikeFilter(ValueExtractor<? super T,? extends E> extractor, String sPattern)
extractor - the ValueExtractor used by this filtersPattern - the string pattern to compare the result withpublic LikeFilter(ValueExtractor<? super T,? extends E> extractor, String sPattern, char chEscape, boolean fIgnoreCase)
extractor - the ValueExtractor used by this filtersPattern - the string pattern to compare the result withchEscape - the escape character for escaping '%' and '_'fIgnoreCase - true to be case-insensitiveprotected boolean evaluateExtracted(E extracted)
evaluateExtracted in class ExtractorFilter<T,E>extracted - an extracted value to evaluatepublic int calculateEffectiveness(Map mapIndexes, Set setKeys)
The returned value is an effectiveness estimate of how well this filter can use the specified indexes to filter the specified keys. An operation that requires no more than a single access to the index content (i.e. Equals, NotEquals) has an effectiveness of one. Evaluation of a single entry is assumed to have an effectiveness that depends on the index implementation and is usually measured as a constant number of the single operations. This number is referred to as evaluation cost.
If the effectiveness of a filter evaluates to a number larger than the keySet.size() * <evaluation cost> then a user could avoid using the index and iterate through the keySet calling evaluate rather then applyIndex.
calculateEffectiveness in interface IndexAwareFilter<Object,T>calculateEffectiveness in class ExtractorFilter<T,E>mapIndexes - the available MapIndex objects keyed by the
related ValueExtractor; read-onlysetKeys - the set of keys that will be filtered; read-onlypublic Filter applyIndex(Map mapIndexes, Set setKeys)
The filter is responsible for removing all keys from the passed set of
keys that the applicable indexes can prove should be filtered. If the
filter does not fully evaluate the remaining keys using just the index
information, it must return a filter (which may be an
EntryFilter) that can complete the task using an iterating
implementation. If, on the other hand, the filter does fully evaluate
the remaining keys using just the index information, then it should
return null to indicate that no further filtering is necessary.
applyIndex in interface IndexAwareFilter<Object,T>applyIndex in class ExtractorFilter<T,E>mapIndexes - the available MapIndex objects keyed by the
related ValueExtractor; read-onlysetKeys - the mutable set of keys that remain to be filteredFilter object (which may be an EntryFilter)
that can be used to process the remaining keys, or null if no
additional filter processing is necessarypublic String getPattern()
public boolean isIgnoreCase()
public char getEscapeChar()
public void showPlan()
public void readExternal(DataInput in) throws IOException
readExternal in interface ExternalizableLitereadExternal in class ComparisonFilter<T,E,String>in - the DataInput stream to read data from in order to restore
the state of this objectIOException - if an I/O exception occursNotActiveException - if the object is not in its initial
state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal in interface ExternalizableLitewriteExternal in class ComparisonFilter<T,E,String>out - the DataOutput stream to write the state of this object toIOException - if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
readExternal in interface PortableObjectreadExternal in class ComparisonFilter<T,E,String>in - the PofReader from which to read the object's stateIOException - if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
writeExternal in interface PortableObjectwriteExternal in class ComparisonFilter<T,E,String>out - the PofWriter to which to write the object's stateIOException - if an I/O error occursprotected void buildPlan()
protected boolean isMatch(String sValue)
sValue - the String value to match against this filter's pattern