-package com.hughes.android.dictionary.engine;
+// Copyright 2011 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
-import java.io.IOException;
-import java.io.PrintStream;
-import java.io.RandomAccessFile;
+package com.hughes.android.dictionary.engine;
import com.hughes.util.IndexedObject;
import com.hughes.util.raf.RAFListSerializer;
+import com.ibm.icu.text.Transliterator;
+
+import java.io.DataInput;
+import java.io.DataOutput;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.util.Comparator;
+import java.util.List;
+import java.util.regex.Pattern;
public abstract class RowBase extends IndexedObject {
- /**
- * the Index owning this RowBase.
- */
- public final Index index;
-
- /**
- * Where this RowBase points to.
- */
- public final int referenceIndex;
-
- /**
- * the TokenRow above this RowBase, populated on demand.
- */
- private TokenRow tokenRow = null;
-
- RowBase(final RandomAccessFile raf, final int thisRowIndex, final Index index) throws IOException {
- super(thisRowIndex);
- this.index = index;
- this.referenceIndex = raf.readInt(); // what this points to.
- }
-
- public RowBase(final int referenceIndex, final int thisRowIndex, final Index index) {
- super(thisRowIndex);
- this.index = index;
- this.referenceIndex = referenceIndex;
- }
-
- /**
- * @return the TokenRow that this row is "filed under".
- */
- public TokenRow getTokenRow(final boolean search) {
- if (tokenRow == null && search) {
- int r = index() - 1;
- while (r >= 0) {
- final RowBase row = index.rows.get(r);
- final TokenRow candidate = row.getTokenRow(false);
- if (candidate != null) {
- for (++r; r <= index(); ++r) {
- index.rows.get(r).setTokenRow(candidate);
- }
- break;
+ /**
+ * the Index owning this RowBase.
+ */
+ final Index index;
+
+ /**
+ * Where this RowBase points to.
+ */
+ public final int referenceIndex;
+
+ /**
+ * the TokenRow above this RowBase, populated on demand.
+ */
+ private TokenRow tokenRow = null;
+
+ RowBase(final DataInput raf, final int thisRowIndex, final Index index, final int extra)
+ throws IOException {
+ super(thisRowIndex);
+ this.index = index;
+ this.referenceIndex = extra == -1 ? raf.readInt() : ((extra << 16) + raf.readUnsignedShort()); // what this points to.
+ }
+
+ RowBase(final int referenceIndex, final int thisRowIndex, final Index index) {
+ super(thisRowIndex);
+ this.index = index;
+ this.referenceIndex = referenceIndex;
+ }
+
+ static final class RowKey {
+ final Class<? extends RowBase> rowClass;
+ final int referenceIndex;
+
+ private RowKey(Class<? extends RowBase> rowClass, int referenceIndex) {
+ this.rowClass = rowClass;
+ this.referenceIndex = referenceIndex;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (!(o instanceof RowKey)) {
+ return false;
+ }
+ final RowKey that = (RowKey) o;
+ return this.referenceIndex == that.referenceIndex
+ && this.rowClass.equals(that.rowClass);
+ }
+
+ @Override
+ public int hashCode() {
+ return rowClass.hashCode() + referenceIndex;
}
- --r;
- }
- assert tokenRow != null;
}
- return tokenRow;
- }
-
- public void setTokenRow(TokenRow tokenRow) {
- assert this.tokenRow == null;
- assert tokenRow != null;
- this.tokenRow = tokenRow;
- }
-
- public abstract void print(PrintStream out);
-
- // RowBase must manage "disk-based" polymorphism. All other polymorphism is
- // dealt with in the normal manner.
- static class Serializer implements RAFListSerializer<RowBase> {
-
- final Index index;
-
- Serializer(final Index index) {
- this.index = index;
+
+ public RowKey getRowKey() {
+ return new RowKey(this.getClass(), referenceIndex);
}
- @Override
- public RowBase read(RandomAccessFile raf, final int listIndex) throws IOException {
- final byte rowType = raf.readByte();
- if (rowType == 0) {
- return new PairEntry.Row(raf, listIndex, index);
- } else if (rowType == 1) {
- return new TokenRow(raf, listIndex, index);
- }
- throw new RuntimeException("Invalid rowType:" + rowType);
+ /**
+ * @return the TokenRow that this row is "filed under".
+ */
+ public TokenRow getTokenRow(final boolean search) {
+ if (tokenRow == null && search) {
+ int r = index() - 1;
+ int rUp = index() + 1;
+ while (r >= 0) {
+ final RowBase row = index.rows.get(r);
+ final TokenRow candidate = row.getTokenRow(false);
+ if (candidate != null) {
+ for (++r; r <= index(); ++r) {
+ index.rows.get(r).setTokenRow(candidate);
+ }
+ break;
+ }
+ if (rUp < index.rows.size()) {
+ final RowBase rowUp = index.rows.get(rUp);
+ TokenRow candidateUp = rowUp.getTokenRow(false);
+ if (candidateUp != null) {
+ // Did we hit the next set of TokenRows?
+ if (candidateUp.index() > this.index()) {
+ final int tokenIndex = index.sortedIndexEntries
+ .get(candidateUp.referenceIndex - 1).startRow;
+ candidateUp = (TokenRow) index.rows.get(tokenIndex);
+ }
+ for (--rUp; rUp >= index(); --rUp) {
+ index.rows.get(rUp).setTokenRow(candidateUp);
+ }
+ break;
+ }
+ rUp++;
+ }
+ --r;
+ }
+ assert tokenRow != null;
+ }
+ return tokenRow;
+ }
+
+ void setTokenRow(TokenRow tokenRow) {
+ assert this.tokenRow == null;
+ assert tokenRow != null;
+ this.tokenRow = tokenRow;
+ }
+
+ public abstract void print(PrintStream out);
+
+ public abstract String getRawText(final boolean compact);
+
+ public abstract RowMatchType matches(final List<String> searchTokens,
+ final Pattern orderedMatch, final Transliterator normalizer, boolean swapPairEntries);
+
+ // RowBase must manage "disk-based" polymorphism. All other polymorphism is
+ // dealt with in the normal manner.
+ static class Serializer implements RAFListSerializer<RowBase> {
+
+ final Index index;
+
+ Serializer(final Index index) {
+ this.index = index;
+ }
+
+ @Override
+ public RowBase read(DataInput raf, final int listIndex) throws IOException {
+ int rowType = raf.readUnsignedByte();
+ int extra = -1;
+ if (rowType >= 0x20) {
+ extra = rowType & 0x1f;
+ rowType = (rowType >> 5) - 1;
+ }
+ switch (rowType) {
+ case 0:
+ return new PairEntry.Row(raf, listIndex, index, extra);
+ case 1:
+ case 3:
+ return new TokenRow(raf, listIndex, index, /* hasMainEntry */rowType == 1, extra);
+ case 2:
+ return new TextEntry.Row(raf, listIndex, index, extra);
+ case 4:
+ return new HtmlEntry.Row(raf, listIndex, index, extra);
+ }
+ throw new RuntimeException("Invalid rowType:" + rowType);
+ }
+
+ @Override
+ public void write(DataOutput raf, RowBase t) throws IOException {
+ int type = 0;
+ if (t instanceof PairEntry.Row) {
+ type = 0;
+ } else if (t instanceof TokenRow) {
+ final TokenRow tokenRow = (TokenRow) t;
+ type = tokenRow.hasMainEntry ? 1 : 3;
+ } else if (t instanceof TextEntry.Row) {
+ type = 2;
+ } else if (t instanceof HtmlEntry.Row) {
+ type = 4;
+ }
+ assert t.referenceIndex < (1 << 21);
+ if ((t.referenceIndex >> 16) >= (1 << 5))
+ throw new RuntimeException("referenceIndex larger than supported max");
+ raf.writeByte(((type + 1) << 5) + (t.referenceIndex >> 16));
+ raf.writeShort(t.referenceIndex);
+ }
+ }
+
+ public static final class LengthComparator implements Comparator<RowBase> {
+
+ final boolean swapPairEntries;
+
+ public LengthComparator(boolean swapPairEntries) {
+ this.swapPairEntries = swapPairEntries;
+ }
+
+ @Override
+ public int compare(RowBase row1, RowBase row2) {
+ final int l1 = row1.getSideLength(swapPairEntries);
+ final int l2 = row2.getSideLength(swapPairEntries);
+ return l1 < l2 ? -1 : l1 == l2 ? 0 : 1;
+ }
}
- @Override
- public void write(RandomAccessFile raf, RowBase t) throws IOException {
- if (t instanceof PairEntry.Row) {
- raf.writeByte(0);
- } else if (t instanceof TokenRow) {
- raf.writeByte(1);
- }
- raf.writeInt(t.referenceIndex);
+ int getSideLength(boolean swapPairEntries) {
+ return getRawText(false).length();
}
- }
}
projects / Dictionary.git / blobdiff