小编Ste*_*veS的帖子

我正在尝试找到具有多个传入关系的所有节点.鉴于此数据:

a-[has]->b
a-[has]->c
d-[has]->b

所以,我正在寻找一个返回'b'的查询,因为它有更多的传入.

此查询已结束.它返回'a'和'b',因为它们都有2个关系:

match (n)--()
with n,count(*) as rel_cnt
where rel_cnt > 1
return n;

但是,此查询(添加' - >')不返回任何内容,我不知道原因:

match (n)-->()
with n,count(*) as rel_cnt
where rel_cnt > 1
return n;

我错了吗？

我有一个mongodb的小示例项目,无法让注释处理器工作.我正在使用以下示例:

http://www.querydsl.com/static/querydsl/latest/reference/html/ch02s07.html

跑步mvn clean install产生:

Annotation processor 'com.querydsl.mongodb.morphia.MorphiaAnnotationProcessor' not found

我到处寻找那个处理器.只是找不到它.这是pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.stevesando</groupId>
<artifactId>FindAll</artifactId>
<version>1.0-SNAPSHOT</version>

<dependencies>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-mongodb</artifactId>
        <version>1.2.1.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <version>1.2.1.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>com.mysema.querydsl</groupId>
        <artifactId>querydsl-mongodb</artifactId>
        <version>3.6.0</version>
    </dependency>

    <dependency>
        <groupId>com.mysema.querydsl</groupId>
        <artifactId>querydsl-apt</artifactId>
        <version>3.6.0</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.6.1</version>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>3.1</version>
            <configuration>
                <source>1.7</source>
                <target>1.7</target>
                <encoding>UTF-8</encoding>
            </configuration>
        </plugin>

        <plugin>
            <groupId>com.mysema.maven</groupId>
            <artifactId>apt-maven-plugin</artifactId>
            <version>1.1.3</version>
            <executions>
                <execution>
                    <goals>
                        <goal>process</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>target/generated-sources/java</outputDirectory>
                        <processor>com.querydsl.mongodb.morphia.MorphiaAnnotationProcessor</processor>
                    </configuration>
                </execution>
            </executions> …