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BaseBuilder

BaseBuilder

作者: 尼尔君 | 来源:发表于2018-08-30 19:43 被阅读0次
    
    package Mybatis;
    
    //
    //Source code recreated from a .class file by IntelliJ IDEA
    //(powered by Fernflower decompiler)
    //
    
    
    import java.util.Arrays;
    import java.util.HashSet;
    import java.util.Set;
    import java.util.regex.Pattern;
    import org.apache.ibatis.mapping.ParameterMode;
    import org.apache.ibatis.mapping.ResultSetType;
    import org.apache.ibatis.session.Configuration;
    import org.apache.ibatis.type.JdbcType;
    import org.apache.ibatis.type.TypeAliasRegistry;
    import org.apache.ibatis.type.TypeHandler;
    import org.apache.ibatis.type.TypeHandlerRegistry;
    
    public abstract class BaseBuilder {
     protected final Configuration configuration;
     protected final TypeAliasRegistry typeAliasRegistry;
     protected final TypeHandlerRegistry typeHandlerRegistry;
    
     public BaseBuilder(Configuration configuration) {
         this.configuration = configuration;
         this.typeAliasRegistry = this.configuration.getTypeAliasRegistry();
         this.typeHandlerRegistry = this.configuration.getTypeHandlerRegistry();
     }
    
     public Configuration getConfiguration() {
         return this.configuration;
     }
    
     protected Pattern parseExpression(String regex, String defaultValue) {
         return Pattern.compile(regex == null ? defaultValue : regex);
     }
    
     protected Boolean booleanValueOf(String value, Boolean defaultValue) {
         return value == null ? defaultValue : Boolean.valueOf(value);
     }
    
     protected Integer integerValueOf(String value, Integer defaultValue) {
         return value == null ? defaultValue : Integer.valueOf(value);
     }
    
     protected Set<String> stringSetValueOf(String value, String defaultValue) {
         value = value == null ? defaultValue : value;
         return new HashSet(Arrays.asList(value.split(",")));
     }
    
     protected JdbcType resolveJdbcType(String alias) {
         if (alias == null) {
             return null;
         } else {
             try {
                 return JdbcType.valueOf(alias);
             } catch (IllegalArgumentException var3) {
                 throw new BuilderException("Error resolving JdbcType. Cause: " + var3, var3);
             }
         }
     }
    
     protected ResultSetType resolveResultSetType(String alias) {
         if (alias == null) {
             return null;
         } else {
             try {
                 return ResultSetType.valueOf(alias);
             } catch (IllegalArgumentException var3) {
                 throw new BuilderException("Error resolving ResultSetType. Cause: " + var3, var3);
             }
         }
     }
    
     protected ParameterMode resolveParameterMode(String alias) {
         if (alias == null) {
             return null;
         } else {
             try {
                 return ParameterMode.valueOf(alias);
             } catch (IllegalArgumentException var3) {
                 throw new BuilderException("Error resolving ParameterMode. Cause: " + var3, var3);
             }
         }
     }
    
     protected Object createInstance(String alias) {
         Class<?> clazz = this.resolveClass(alias);
         if (clazz == null) {
             return null;
         } else {
             try {
                 return this.resolveClass(alias).newInstance();
             } catch (Exception var4) {
                 throw new BuilderException("Error creating instance. Cause: " + var4, var4);
             }
         }
     }
    
     protected Class<?> resolveClass(String alias) {
         if (alias == null) {
             return null;
         } else {
             try {
                 return this.resolveAlias(alias);
             } catch (Exception var3) {
                 throw new BuilderException("Error resolving class. Cause: " + var3, var3);
             }
         }
     }
    
     protected TypeHandler<?> resolveTypeHandler(Class<?> javaType, String typeHandlerAlias) {
         if (typeHandlerAlias == null) {
             return null;
         } else {
             Class<?> type = this.resolveClass(typeHandlerAlias);
             if (type != null && !TypeHandler.class.isAssignableFrom(type)) {
                 throw new BuilderException("Type " + type.getName() + " is not a valid TypeHandler because it does not implement TypeHandler interface");
             } else {
                 return this.resolveTypeHandler(javaType, type);
             }
         }
     }
    
     protected TypeHandler<?> resolveTypeHandler(Class<?> javaType, Class<? extends TypeHandler<?>> typeHandlerType) {
         if (typeHandlerType == null) {
             return null;
         } else {
             TypeHandler<?> handler = this.typeHandlerRegistry.getMappingTypeHandler(typeHandlerType);
             if (handler == null) {
                 handler = this.typeHandlerRegistry.getInstance(javaType, typeHandlerType);
             }
    
             return handler;
         }
     }
    
     protected Class<?> resolveAlias(String alias) {
         return this.typeAliasRegistry.resolveAlias(alias);
     }
    }
    
    
    

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