X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=bundles%2Forg.simantics.db.layer0%2Fsrc%2Forg%2Fsimantics%2Fdb%2Flayer0%2Fgenericrelation%2FIndexQueries.java;h=135c5ebc2a107b02d20923db0cdd0eda52f082a8;hb=459ca221e046b0ed539e4eab4486a0a3178a4eba;hp=851497d6fb8652459b96ac4f85623214cea0e9e8;hpb=969bd23cab98a79ca9101af33334000879fb60c5;p=simantics%2Fplatform.git
diff --git a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/IndexQueries.java b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/IndexQueries.java
index 851497d6f..135c5ebc2 100644
--- a/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/IndexQueries.java
+++ b/bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/genericrelation/IndexQueries.java
@@ -1,171 +1,171 @@
-package org.simantics.db.layer0.genericrelation;
-
-
-/**
- * This class contains utilities related to queries made into Lucene indexes,
- * such as escaping search terms.
- *
- * @author Tuukka Lehtonen
- */
-public class IndexQueries {
-
- /**
- * Same as calling {@link #escape(String, boolean, boolean)} with
- * escapeKeywords set to true
.
- *
- * @param s
- * @param escapeWildcards
- * @return escaped string
- */
- public static String escape(String s, boolean escapeWildcards) {
- return escape(s, escapeWildcards, true);
- }
-
- /**
- * Returns a String where those characters that QueryParser expects to be
- * escaped are escaped by a preceding \
.
- *
- * Copied from
- * {@link org.apache.lucene.queryParser.QueryParser#escape(String)} but
- * disabled escaping of wildcard characters '*' and '?'. Clients must escape
- * wildcards themselves to allow use of wildcards in queries.
- *
- * @param s
- * lucene query to escape
- * @param escapeWildcards
- * true
to escape also wildcard characters
- * @param escapeKeywords
- * true
to escape keywords like AND, OR, etc.
- * @return escaped string
- */
- public static String escape(String s, boolean escapeWildcards, boolean escapeKeywords) {
- if (!needsEscaping(s, escapeWildcards, escapeKeywords))
- return s;
-
- StringBuilder sb = new StringBuilder(s.length() + 8);
- int len = s.length();
- // The beginning of the line is the same as the last character being
- // whitespace.
- boolean lastWhitespace = true;
- for (int i = 0; i < len;) {
- char c = s.charAt(i);
- // These characters are part of the query syntax and must be escaped
- if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')' || c == ':'
- || c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
- || c == '|' || c == '&' || c == '/' || (escapeWildcards && (c == '*' || c == '?'))) {
- sb.append('\\');
- sb.append(c);
- lastWhitespace = false;
- } else if (Character.isWhitespace(c)) {
- sb.append(c);
- lastWhitespace = true;
- } else {
- if (escapeKeywords && lastWhitespace) {
- int reslen = processReservedWords(s, i, sb);
- if (reslen > 0) {
- i += reslen;
- lastWhitespace = false;
- continue;
- }
- }
- sb.append(c);
- lastWhitespace = false;
- }
- ++i;
- }
- return sb.toString();
- }
-
- /**
- * Same logic as in {@link #escape(String, boolean, boolean)} but this one
- * simply checks whether the input string needs escaping at all or not.
- *
- * @param s
- * @param escapeWildcards
- * @param escapeKeywords
- * @return
- */
- private static boolean needsEscaping(String s, boolean escapeWildcards, boolean escapeKeywords) {
- int len = s.length();
- // The beginning of the line is the same as the last character being
- // whitespace.
- boolean lastWhitespace = true;
- for (int i = 0; i < len;) {
- char c = s.charAt(i);
- // These characters are part of the query syntax and must be escaped
- if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')' || c == ':'
- || c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
- || c == '|' || c == '&' || c == '/' || (escapeWildcards && (c == '*' || c == '?'))) {
- return true;
- } else if (Character.isWhitespace(c)) {
- lastWhitespace = true;
- } else {
- if (escapeKeywords && lastWhitespace) {
- int reslen = processReservedWords(s, i, null);
- if (reslen > 0)
- return true;
- }
- lastWhitespace = false;
- }
- ++i;
- }
- return false;
- }
-
- private static final String[] RESERVED_WORDS = {
- "AND", "and",
- "OR", "or"
- };
-
- /**
- * Lucene reserved words are case-sensitive for its query parser. Therefore
- * only case-sensitive hits need to be looked for.
- *
- * @param s
- * @param fromIndex
- * @return length of the reserved word in the input or 0 if no reserved word
- * in the input
- */
- private static int processReservedWords(String s, int fromIndex, StringBuilder sb) {
- final int total = RESERVED_WORDS.length;
- for (int w = 0; w < total; w += 2) {
- String word = RESERVED_WORDS[w];
- int len = word.length();
- if (s.regionMatches(false, fromIndex, word, 0, len)) {
- if (sb != null) {
- String replacement = RESERVED_WORDS[w+1];
- sb.append(replacement);
- }
- return len;
- }
- }
- return 0;
- }
-
- /**
- * Returns a String where those characters that QueryParser expects to be
- * escaped are escaped by a preceding \
.
- */
- public static String escape(String s) {
- return escape(s, false);
- }
-
- public static StringBuilder escapeTerm(String field, String term, boolean escapeWildcards, StringBuilder result) {
- if (field != null)
- result.append(field).append(':');
- result.append( escape(term, escapeWildcards) );
- return result;
- }
-
- public static String escapeTerm(String field, String term, boolean escapeWildcards) {
- StringBuilder sb = new StringBuilder();
- return escapeTerm(field, term, escapeWildcards, sb).toString();
- }
-
-// public static void main(String[] args) {
-// System.out.println("esc: " + escape("AND01", true, true));
-// System.out.println("esc: " + escape("AND 01", true, true));
-// System.out.println("esc: " + escape(" AND 01", true, true));
-// }
-
-}
+package org.simantics.db.layer0.genericrelation;
+
+
+/**
+ * This class contains utilities related to queries made into Lucene indexes,
+ * such as escaping search terms.
+ *
+ * @author Tuukka Lehtonen
+ */
+public class IndexQueries {
+
+ /**
+ * Same as calling {@link #escape(String, boolean, boolean)} with
+ * escapeKeywords set to true
.
+ *
+ * @param s
+ * @param escapeWildcards
+ * @return escaped string
+ */
+ public static String escape(String s, boolean escapeWildcards) {
+ return escape(s, escapeWildcards, true);
+ }
+
+ /**
+ * Returns a String where those characters that QueryParser expects to be
+ * escaped are escaped by a preceding \
.
+ *
+ * Copied from
+ * {@link org.apache.lucene.queryParser.QueryParser#escape(String)} but
+ * disabled escaping of wildcard characters '*' and '?'. Clients must escape
+ * wildcards themselves to allow use of wildcards in queries.
+ *
+ * @param s
+ * lucene query to escape
+ * @param escapeWildcards
+ * true
to escape also wildcard characters
+ * @param escapeKeywords
+ * true
to escape keywords like AND, OR, etc.
+ * @return escaped string
+ */
+ public static String escape(String s, boolean escapeWildcards, boolean escapeKeywords) {
+ if (!needsEscaping(s, escapeWildcards, escapeKeywords))
+ return s;
+
+ StringBuilder sb = new StringBuilder(s.length() + 8);
+ int len = s.length();
+ // The beginning of the line is the same as the last character being
+ // whitespace.
+ boolean lastWhitespace = true;
+ for (int i = 0; i < len;) {
+ char c = s.charAt(i);
+ // These characters are part of the query syntax and must be escaped
+ if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')' || c == ':'
+ || c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
+ || c == '|' || c == '&' || c == '/' || (escapeWildcards && (c == '*' || c == '?'))) {
+ sb.append('\\');
+ sb.append(c);
+ lastWhitespace = false;
+ } else if (Character.isWhitespace(c)) {
+ sb.append(c);
+ lastWhitespace = true;
+ } else {
+ if (escapeKeywords && lastWhitespace) {
+ int reslen = processReservedWords(s, i, sb);
+ if (reslen > 0) {
+ i += reslen;
+ lastWhitespace = false;
+ continue;
+ }
+ }
+ sb.append(c);
+ lastWhitespace = false;
+ }
+ ++i;
+ }
+ return sb.toString();
+ }
+
+ /**
+ * Same logic as in {@link #escape(String, boolean, boolean)} but this one
+ * simply checks whether the input string needs escaping at all or not.
+ *
+ * @param s
+ * @param escapeWildcards
+ * @param escapeKeywords
+ * @return
+ */
+ private static boolean needsEscaping(String s, boolean escapeWildcards, boolean escapeKeywords) {
+ int len = s.length();
+ // The beginning of the line is the same as the last character being
+ // whitespace.
+ boolean lastWhitespace = true;
+ for (int i = 0; i < len;) {
+ char c = s.charAt(i);
+ // These characters are part of the query syntax and must be escaped
+ if (c == '\\' || c == '+' || c == '-' || c == '!' || c == '(' || c == ')' || c == ':'
+ || c == '^' || c == '[' || c == ']' || c == '\"' || c == '{' || c == '}' || c == '~'
+ || c == '|' || c == '&' || c == '/' || (escapeWildcards && (c == '*' || c == '?'))) {
+ return true;
+ } else if (Character.isWhitespace(c)) {
+ lastWhitespace = true;
+ } else {
+ if (escapeKeywords && lastWhitespace) {
+ int reslen = processReservedWords(s, i, null);
+ if (reslen > 0)
+ return true;
+ }
+ lastWhitespace = false;
+ }
+ ++i;
+ }
+ return false;
+ }
+
+ private static final String[] RESERVED_WORDS = {
+ "AND", "and",
+ "OR", "or"
+ };
+
+ /**
+ * Lucene reserved words are case-sensitive for its query parser. Therefore
+ * only case-sensitive hits need to be looked for.
+ *
+ * @param s
+ * @param fromIndex
+ * @return length of the reserved word in the input or 0 if no reserved word
+ * in the input
+ */
+ private static int processReservedWords(String s, int fromIndex, StringBuilder sb) {
+ final int total = RESERVED_WORDS.length;
+ for (int w = 0; w < total; w += 2) {
+ String word = RESERVED_WORDS[w];
+ int len = word.length();
+ if (s.regionMatches(false, fromIndex, word, 0, len)) {
+ if (sb != null) {
+ String replacement = RESERVED_WORDS[w+1];
+ sb.append(replacement);
+ }
+ return len;
+ }
+ }
+ return 0;
+ }
+
+ /**
+ * Returns a String where those characters that QueryParser expects to be
+ * escaped are escaped by a preceding \
.
+ */
+ public static String escape(String s) {
+ return escape(s, false);
+ }
+
+ public static StringBuilder escapeTerm(String field, String term, boolean escapeWildcards, StringBuilder result) {
+ if (field != null)
+ result.append(field).append(':');
+ result.append( escape(term, escapeWildcards) );
+ return result;
+ }
+
+ public static String escapeTerm(String field, String term, boolean escapeWildcards) {
+ StringBuilder sb = new StringBuilder();
+ return escapeTerm(field, term, escapeWildcards, sb).toString();
+ }
+
+// public static void main(String[] args) {
+// System.out.println("esc: " + escape("AND01", true, true));
+// System.out.println("esc: " + escape("AND 01", true, true));
+// System.out.println("esc: " + escape(" AND 01", true, true));
+// }
+
+}