Commit 496ed8cb authored by terrymanu's avatar terrymanu
Browse files

use soft ref to replace weak ref

parent 63433930

sharding-core/src/main/java/io/shardingsphere/core/parsing/cache/ParsingResultCache.java

+6 −4
Original line number Diff line number Diff line
@@ -21,8 +21,9 @@ import io.shardingsphere.core.parsing.parser.sql.SQLStatement; 
import lombok.AccessLevel;

import lombok.NoArgsConstructor;



import java.lang.ref.SoftReference;

import java.util.HashMap;

import java.util.Map;

import java.util.WeakHashMap;



/**

 * Parsing result cache.
@@ -34,7 +35,7 @@ public final class ParsingResultCache { 
    

    private static final ParsingResultCache INSTANCE = new ParsingResultCache();

    

    private final Map<String, SQLStatement> cache = new WeakHashMap<>(65535, 1);

    private final Map<String, SoftReference<SQLStatement>> cache = new HashMap<>(65535, 1);

    

    /**

     * Get parsing result cache instance.
@@ -52,7 +53,7 @@ public final class ParsingResultCache { 
     * @param sqlStatement SQL statement

     */

    public void put(final String sql, final SQLStatement sqlStatement) {

        cache.put(sql, sqlStatement);

        cache.put(sql, new SoftReference<>(sqlStatement));

    }

    

    /**
@@ -62,7 +63,8 @@ public final class ParsingResultCache { 
     * @return SQL statement

     */

    public SQLStatement getSQLStatement(final String sql) {

        return cache.get(sql);

        SoftReference<SQLStatement> result = cache.get(sql);

        return null == result ? null : result.get();

    }

    

    /**