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improved query compression

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This commit is contained in:
Timo Westkämper 2012-06-17 16:45:03 +03:00
parent 819800bf54
commit 713fdc56eb
2 changed files with 15 additions and 4 deletions
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17
querydsl-core/src/main/java/com/mysema/query/support/SerializerBase.java
View File

@ -13,6 +13,7 @@
*/
package com.mysema.query.support;
import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
@ -50,7 +51,13 @@ public abstract class SerializerBase<S extends SerializerBase<S>> implements Vis
private final StringBuilder builder = new StringBuilder();
private static final Pattern OPERATION = Pattern.compile("\\d+[\\+\\-]\\d+");
private static final String NUMBER = "[\\+\\-]?\\d+\\.?\\d*";
private static final String WS = "\\s*";
private static final Pattern OPERATOR = Pattern.compile(WS + "[\\+\\-]" + WS);
private static final Pattern OPERATION = Pattern.compile(NUMBER + WS + "[\\+\\-]" + WS + NUMBER);
private String constantPrefix = "a";
@ -78,13 +85,15 @@ public abstract class SerializerBase<S extends SerializerBase<S>> implements Vis
rv.append(queryString.subSequence(end, m.start()));
}
String str = queryString.substring(m.start(), m.end());
String[] operands = str.split("[\\+\\-]");
String[] operands = OPERATOR.split(str);
char operator = str.charAt(operands[0].length());
BigDecimal result = null;
if (operator == '+') {
rv.append(Integer.valueOf(operands[0]) + Integer.valueOf(operands[1]));
result = new BigDecimal(operands[0]).add(new BigDecimal(operands[1]));
} else {
rv.append(Integer.valueOf(operands[0]) - Integer.valueOf(operands[1]));
result = new BigDecimal(operands[0]).add(new BigDecimal(operands[1]));
}
rv.append(result.toString());
end = m.end();
}
if (end < queryString.length()) {

2
querydsl-core/src/test/java/com/mysema/query/support/SerializerBaseTest.java
View File

@ -10,6 +10,8 @@ public class SerializerBaseTest {
public void Normalize() {
assertEquals("3", SerializerBase.normalize("1+2"));
assertEquals("where 3 = 3", SerializerBase.normalize("where 1+2 = 3"));
assertEquals("where 3.3 = 3.3", SerializerBase.normalize("where 1.1+2.2 = 3.3"));
assertEquals("where 3.3 = 3.3", SerializerBase.normalize("where 1.1 + 2.2 = 3.3"));
}
}